/*

                                             
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                            #@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@                            
                      :%%%%%***@@@============================%%%%%+                      
                   .==+*****+++@@@----------------------------******==:                   
                 ..-@@#---==+**@@@---------------------------------+@@+..                 
                 @@%-----=++%@@---------------------------------------*@@:                
              +##+++-----=++%@@---------------------------------------+**###              
              #@@-----===+**@@@+++++=----------------=+++++++++++-----=++%@@              
              #@@-----=++#@@@@@@@@@@#----------------*@@@@@@@@@@%--------%@@              
           +%%***+++++*@@+..........-@@*----------+@@+..........-@@#-----+**%%%           
           *@@%#######*++:          .++***=-----***++:  :========+++**+--+++@@@           
           *@@@@@@@@@@*                =@@+-----@@#     *@@@@@@@#  -@@*--+++@@@           
           *@@*++--+@@*                =@@+-----@@#     *@@@@@@@#  -@@*--+++@@@           
           *@@*++--+@@*                =@@+-----@@#     *@@@@@@@#  -@@*--+++@@@           
        .::*%%*++--+@@*  .:::::        =@@+-----@@#     =#######+  -@@*--=++%%%::.        
        =@@#++=----+@@*  =@@@@@        =@@+-----@@#                -@@*-----+++@@*        
        =@@#++=----+@@#::*@@@@@      ::*@@+-----@@%::.           ::=@@*-----+++@@*        
        =@@#++=----=##*++******.....:++*##=-----##*++-..........:++*##+-----+++@@*        
        =@@#++=-------+@@*::::::::::+@@*----------+@@*::::::::::=@@#--------+++@@*        
        =@@#++=----------*@@@@@@@@@@#----------------*@@@@@@@@@@%-----------+++@@*        
        =@@#++=----------+**********+----------------+**********+-----------+++@@*        
        =@@#++=-------------------------------------------------------------+++@@*        
        =@@#++=-------------------------------------------------------------+++@@*        
        =@@#+++++--------------@@@@@@@@@@@@@@@@@@@@@@@@@@@@+-------------++++++@@*        
        =@@#+++++--------------###@@@@@@@@@@@@@@@@@@@@@@%##=-------------++++++@@*        
        =@@#+++++-----------------@@@@@@@@@@@@@@@@@@@@@@+----------------++++++@@*        
           *@@*+++++--------------------------------------------------=+++++@@@           
           *@@*+++++--------------------------------------------------=+++++@@@           
           +%%***+++=====----------------------------------------======++***%%%           
              #@@++++++++=--------------------------------------=++++++++%@@              
              .::%%%%%#++++++++----------------------------=+++++++*%%%%%=::              
                 +++++*########============================*#######*+++++.                
                      -@@@@@@@@++++++++++++++++++++++++++++%@@@@@@@*                      
                               @@@@@@@@@@@@@@@@@@@@@@@@@@@@:                              
                               ============================.                              
                                                                 

## KEVo is a friendly, special needs, zombie-goblin who literally eats $ETH and shits out $KEVo tokens. ##
## Collect [KEVo]TOKEN $KEVo like a good degen. Mint [KEVo]LUTION NFTs and play the chain game. ##

https://kevolution.money
https://twitter.com/kevolutionNFTs

*/

pragma solidity ^0.8.0;

/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
  function _msgSender() internal view virtual returns (address) {
    return msg.sender;
  }

  function _msgData() internal view virtual returns (bytes calldata) {
    return msg.data;
  }
}

// File @openzeppelin/contracts/access/Ownable.sol@v4.4.2

// OpenZeppelin Contracts v4.4.1 (access/Ownable.sol)

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
  address private _owner;

  event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

  /**
   * @dev Initializes the contract setting the deployer as the initial owner.
   */
  constructor() {
    _transferOwnership(_msgSender());
  }

  /**
   * @dev Returns the address of the current owner.
   */
  function owner() public view virtual returns (address) {
    return _owner;
  }

  /**
   * @dev Throws if called by any account other than the owner.
   */
  modifier onlyOwner() {
    require(owner() == _msgSender(), 'Ownable: caller is not the owner');
    _;
  }

  /**
   * @dev Leaves the contract without owner. It will not be possible to call
   * `onlyOwner` functions anymore. Can only be called by the current owner.
   *
   * NOTE: Renouncing ownership will leave the contract without an owner,
   * thereby removing any functionality that is only available to the owner.
   */
  function renounceOwnership() public virtual onlyOwner {
    _transferOwnership(address(0));
  }

  /**
   * @dev Transfers ownership of the contract to a new account (`newOwner`).
   * Can only be called by the current owner.
   */
  function transferOwnership(address newOwner) public virtual onlyOwner {
    require(newOwner != address(0), 'Ownable: new owner is the zero address');
    _transferOwnership(newOwner);
  }

  /**
   * @dev Transfers ownership of the contract to a new account (`newOwner`).
   * Internal function without access restriction.
   */
  function _transferOwnership(address newOwner) internal virtual {
    address oldOwner = _owner;
    _owner = newOwner;
    emit OwnershipTransferred(oldOwner, newOwner);
  }
}

// File @openzeppelin/contracts/token/ERC20/IERC20.sol@v4.4.2

// OpenZeppelin Contracts v4.4.1 (token/ERC20/IERC20.sol)

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
  /**
   * @dev Returns the amount of tokens in existence.
   */
  function totalSupply() external view returns (uint256);

  /**
   * @dev Returns the amount of tokens owned by `account`.
   */
  function balanceOf(address account) external view returns (uint256);

  /**
   * @dev Moves `amount` tokens from the caller's account to `recipient`.
   *
   * Returns a boolean value indicating whether the operation succeeded.
   *
   * Emits a {Transfer} event.
   */
  function transfer(address recipient, uint256 amount) external returns (bool);

  /**
   * @dev Returns the remaining number of tokens that `spender` will be
   * allowed to spend on behalf of `owner` through {transferFrom}. This is
   * zero by default.
   *
   * This value changes when {approve} or {transferFrom} are called.
   */
  function allowance(address owner, address spender) external view returns (uint256);

  /**
   * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
   *
   * Returns a boolean value indicating whether the operation succeeded.
   *
   * IMPORTANT: Beware that changing an allowance with this method brings the risk
   * that someone may use both the old and the new allowance by unfortunate
   * transaction ordering. One possible solution to mitigate this race
   * condition is to first reduce the spender's allowance to 0 and set the
   * desired value afterwards:
   * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
   *
   * Emits an {Approval} event.
   */
  function approve(address spender, uint256 amount) external returns (bool);

  /**
   * @dev Moves `amount` tokens from `sender` to `recipient` using the
   * allowance mechanism. `amount` is then deducted from the caller's
   * allowance.
   *
   * Returns a boolean value indicating whether the operation succeeded.
   *
   * Emits a {Transfer} event.
   */
  function transferFrom(
    address sender,
    address recipient,
    uint256 amount
  ) external returns (bool);

  /**
   * @dev Emitted when `value` tokens are moved from one account (`from`) to
   * another (`to`).
   *
   * Note that `value` may be zero.
   */
  event Transfer(address indexed from, address indexed to, uint256 value);

  /**
   * @dev Emitted when the allowance of a `spender` for an `owner` is set by
   * a call to {approve}. `value` is the new allowance.
   */
  event Approval(address indexed owner, address indexed spender, uint256 value);
}

// File @openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol@v4.4.2

// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)

/**
 * @dev Interface for the optional metadata functions from the ERC20 standard.
 *
 * _Available since v4.1._
 */
interface IERC20Metadata is IERC20 {
  /**
   * @dev Returns the name of the token.
   */
  function name() external view returns (string memory);

  /**
   * @dev Returns the symbol of the token.
   */
  function symbol() external view returns (string memory);

  /**
   * @dev Returns the decimals places of the token.
   */
  function decimals() external view returns (uint8);
}

// File @openzeppelin/contracts/token/ERC20/ERC20.sol@v4.4.2

// OpenZeppelin Contracts v4.4.1 (token/ERC20/ERC20.sol)

/**
 * @dev Implementation of the {IERC20} interface.
 *
 * This implementation is agnostic to the way tokens are created. This means
 * that a supply mechanism has to be added in a derived contract using {_mint}.
 * For a generic mechanism see {ERC20PresetMinterPauser}.
 *
 * TIP: For a detailed writeup see our guide
 * https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
 * to implement supply mechanisms].
 *
 * We have followed general OpenZeppelin Contracts guidelines: functions revert
 * instead returning `false` on failure. This behavior is nonetheless
 * conventional and does not conflict with the expectations of ERC20
 * applications.
 *
 * Additionally, an {Approval} event is emitted on calls to {transferFrom}.
 * This allows applications to reconstruct the allowance for all accounts just
 * by listening to said events. Other implementations of the EIP may not emit
 * these events, as it isn't required by the specification.
 *
 * Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
 * functions have been added to mitigate the well-known issues around setting
 * allowances. See {IERC20-approve}.
 */
contract ERC20 is Context, IERC20, IERC20Metadata {
  mapping(address => uint256) private _balances;

  mapping(address => mapping(address => uint256)) private _allowances;

  uint256 private _totalSupply;

  string private _name;
  string private _symbol;

  /**
   * @dev Sets the values for {name} and {symbol}.
   *
   * The default value of {decimals} is 18. To select a different value for
   * {decimals} you should overload it.
   *
   * All two of these values are immutable: they can only be set once during
   * construction.
   */
  constructor(string memory name_, string memory symbol_) {
    _name = name_;
    _symbol = symbol_;
  }

  /**
   * @dev Returns the name of the token.
   */
  function name() public view virtual override returns (string memory) {
    return _name;
  }

  /**
   * @dev Returns the symbol of the token, usually a shorter version of the
   * name.
   */
  function symbol() public view virtual override returns (string memory) {
    return _symbol;
  }

  /**
   * @dev Returns the number of decimals used to get its user representation.
   * For example, if `decimals` equals `2`, a balance of `505` tokens should
   * be displayed to a user as `5.05` (`505 / 10 ** 2`).
   *
   * Tokens usually opt for a value of 18, imitating the relationship between
   * Ether and Wei. This is the value {ERC20} uses, unless this function is
   * overridden;
   *
   * NOTE: This information is only used for _display_ purposes: it in
   * no way affects any of the arithmetic of the contract, including
   * {IERC20-balanceOf} and {IERC20-transfer}.
   */
  function decimals() public view virtual override returns (uint8) {
    return 18;
  }

  /**
   * @dev See {IERC20-totalSupply}.
   */
  function totalSupply() public view virtual override returns (uint256) {
    return _totalSupply;
  }

  /**
   * @dev See {IERC20-balanceOf}.
   */
  function balanceOf(address account) public view virtual override returns (uint256) {
    return _balances[account];
  }

  /**
   * @dev See {IERC20-transfer}.
   *
   * Requirements:
   *
   * - `recipient` cannot be the zero address.
   * - the caller must have a balance of at least `amount`.
   */
  function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
    _transfer(_msgSender(), recipient, amount);
    return true;
  }

  /**
   * @dev See {IERC20-allowance}.
   */
  function allowance(address owner, address spender)
    public
    view
    virtual
    override
    returns (uint256)
  {
    return _allowances[owner][spender];
  }

  /**
   * @dev See {IERC20-approve}.
   *
   * Requirements:
   *
   * - `spender` cannot be the zero address.
   */
  function approve(address spender, uint256 amount) public virtual override returns (bool) {
    _approve(_msgSender(), spender, amount);
    return true;
  }

  /**
   * @dev See {IERC20-transferFrom}.
   *
   * Emits an {Approval} event indicating the updated allowance. This is not
   * required by the EIP. See the note at the beginning of {ERC20}.
   *
   * Requirements:
   *
   * - `sender` and `recipient` cannot be the zero address.
   * - `sender` must have a balance of at least `amount`.
   * - the caller must have allowance for ``sender``'s tokens of at least
   * `amount`.
   */
  function transferFrom(
    address sender,
    address recipient,
    uint256 amount
  ) public virtual override returns (bool) {
    _transfer(sender, recipient, amount);

    uint256 currentAllowance = _allowances[sender][_msgSender()];
    require(currentAllowance >= amount, 'ERC20: transfer amount exceeds allowance');
    unchecked {
      _approve(sender, _msgSender(), currentAllowance - amount);
    }

    return true;
  }

  /**
   * @dev Atomically increases the allowance granted to `spender` by the caller.
   *
   * This is an alternative to {approve} that can be used as a mitigation for
   * problems described in {IERC20-approve}.
   *
   * Emits an {Approval} event indicating the updated allowance.
   *
   * Requirements:
   *
   * - `spender` cannot be the zero address.
   */
  function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
    _approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);
    return true;
  }

  /**
   * @dev Atomically decreases the allowance granted to `spender` by the caller.
   *
   * This is an alternative to {approve} that can be used as a mitigation for
   * problems described in {IERC20-approve}.
   *
   * Emits an {Approval} event indicating the updated allowance.
   *
   * Requirements:
   *
   * - `spender` cannot be the zero address.
   * - `spender` must have allowance for the caller of at least
   * `subtractedValue`.
   */
  function decreaseAllowance(address spender, uint256 subtractedValue)
    public
    virtual
    returns (bool)
  {
    uint256 currentAllowance = _allowances[_msgSender()][spender];
    require(currentAllowance >= subtractedValue, 'ERC20: decreased allowance below zero');
    unchecked {
      _approve(_msgSender(), spender, currentAllowance - subtractedValue);
    }

    return true;
  }

  /**
   * @dev Moves `amount` of tokens from `sender` to `recipient`.
   *
   * This internal function is equivalent to {transfer}, and can be used to
   * e.g. implement automatic token fees, slashing mechanisms, etc.
   *
   * Emits a {Transfer} event.
   *
   * Requirements:
   *
   * - `sender` cannot be the zero address.
   * - `recipient` cannot be the zero address.
   * - `sender` must have a balance of at least `amount`.
   */
  function _transfer(
    address sender,
    address recipient,
    uint256 amount
  ) internal virtual {
    require(sender != address(0), 'ERC20: transfer from the zero address');
    require(recipient != address(0), 'ERC20: transfer to the zero address');

    _beforeTokenTransfer(sender, recipient, amount);

    uint256 senderBalance = _balances[sender];
    require(senderBalance >= amount, 'ERC20: transfer amount exceeds balance');
    unchecked {
      _balances[sender] = senderBalance - amount;
    }
    _balances[recipient] += amount;

    emit Transfer(sender, recipient, amount);

    _afterTokenTransfer(sender, recipient, amount);
  }

  /** @dev Creates `amount` tokens and assigns them to `account`, increasing
   * the total supply.
   *
   * Emits a {Transfer} event with `from` set to the zero address.
   *
   * Requirements:
   *
   * - `account` cannot be the zero address.
   */
  function _mint(address account, uint256 amount) internal virtual {
    require(account != address(0), 'ERC20: mint to the zero address');

    _beforeTokenTransfer(address(0), account, amount);

    _totalSupply += amount;
    _balances[account] += amount;
    emit Transfer(address(0), account, amount);

    _afterTokenTransfer(address(0), account, amount);
  }

  /**
   * @dev Destroys `amount` tokens from `account`, reducing the
   * total supply.
   *
   * Emits a {Transfer} event with `to` set to the zero address.
   *
   * Requirements:
   *
   * - `account` cannot be the zero address.
   * - `account` must have at least `amount` tokens.
   */
  function _burn(address account, uint256 amount) internal virtual {
    require(account != address(0), 'ERC20: burn from the zero address');

    _beforeTokenTransfer(account, address(0), amount);

    uint256 accountBalance = _balances[account];
    require(accountBalance >= amount, 'ERC20: burn amount exceeds balance');
    unchecked {
      _balances[account] = accountBalance - amount;
    }
    _totalSupply -= amount;

    emit Transfer(account, address(0), amount);

    _afterTokenTransfer(account, address(0), amount);
  }

  /**
   * @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
   *
   * This internal function is equivalent to `approve`, and can be used to
   * e.g. set automatic allowances for certain subsystems, etc.
   *
   * Emits an {Approval} event.
   *
   * Requirements:
   *
   * - `owner` cannot be the zero address.
   * - `spender` cannot be the zero address.
   */
  function _approve(
    address owner,
    address spender,
    uint256 amount
  ) internal virtual {
    require(owner != address(0), 'ERC20: approve from the zero address');
    require(spender != address(0), 'ERC20: approve to the zero address');

    _allowances[owner][spender] = amount;
    emit Approval(owner, spender, amount);
  }

  /**
   * @dev Hook that is called before any transfer of tokens. This includes
   * minting and burning.
   *
   * Calling conditions:
   *
   * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
   * will be transferred to `to`.
   * - when `from` is zero, `amount` tokens will be minted for `to`.
   * - when `to` is zero, `amount` of ``from``'s tokens will be burned.
   * - `from` and `to` are never both zero.
   *
   * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
   */
  function _beforeTokenTransfer(
    address from,
    address to,
    uint256 amount
  ) internal virtual {}

  /**
   * @dev Hook that is called after any transfer of tokens. This includes
   * minting and burning.
   *
   * Calling conditions:
   *
   * - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
   * has been transferred to `to`.
   * - when `from` is zero, `amount` tokens have been minted for `to`.
   * - when `to` is zero, `amount` of ``from``'s tokens have been burned.
   * - `from` and `to` are never both zero.
   *
   * To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
   */
  function _afterTokenTransfer(
    address from,
    address to,
    uint256 amount
  ) internal virtual {}
}

// File @openzeppelin/contracts/token/ERC20/extensions/ERC20Burnable.sol@v4.4.2

// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/ERC20Burnable.sol)

/**
 * @dev Extension of {ERC20} that allows token holders to destroy both their own
 * tokens and those that they have an allowance for, in a way that can be
 * recognized off-chain (via event analysis).
 */
abstract contract ERC20Burnable is Context, ERC20 {
  /**
   * @dev Destroys `amount` tokens from the caller.
   *
   * See {ERC20-_burn}.
   */
  function burn(uint256 amount) public virtual {
    _burn(_msgSender(), amount);
  }

  /**
   * @dev Destroys `amount` tokens from `account`, deducting from the caller's
   * allowance.
   *
   * See {ERC20-_burn} and {ERC20-allowance}.
   *
   * Requirements:
   *
   * - the caller must have allowance for ``accounts``'s tokens of at least
   * `amount`.
   */
  function burnFrom(address account, uint256 amount) public virtual {
    uint256 currentAllowance = allowance(account, _msgSender());
    require(currentAllowance >= amount, 'ERC20: burn amount exceeds allowance');
    unchecked {
      _approve(account, _msgSender(), currentAllowance - amount);
    }
    _burn(account, amount);
  }
}

// File contracts/KevoToken.sol

pragma solidity ^0.8.7;

contract KevoToken is ERC20Burnable, Ownable {
  mapping(address => bool) public isLiquidityPair;
  bool public tradingEnable = false;
  mapping(address => bool) isExcludedFromFee;

  uint256 public buyTaxBurn = 20; // 2% Liquidity tax
  uint256 public buyTaxOthers = 60; // 2% NFTs + 2% NFTs + 2% Charity
  uint256 public sellTaxBurn = 30; // 3% Liquidity tax
  uint256 public sellTaxOthers = 90; // 3% NFTs + 3% NFTs + 3% Charity
  address public taxesWallet;

  uint256 public maxWalletBalance;
  uint256 public maxTransfer;

  constructor(address _taxesWallet) ERC20('[KEVo]TOKEN', 'KEVo') {
    uint256 initialSupply = 1e27;

    isExcludedFromFee[_msgSender()] = true;
    isExcludedFromFee[_taxesWallet] = true;

    taxesWallet = _taxesWallet;

    // 1% of initial supply
    maxWalletBalance = initialSupply / 100;
    // 0.5% of initial supply
    maxTransfer = initialSupply / 200;

    super._mint(_msgSender(), initialSupply);
  }

  function transfer(address to, uint256 amount) public override returns (bool) {
    address from = _msgSender();
    // buy
    if (isLiquidityPair[from] && !isExcludedFromFee[to]) {
      require(tradingEnable, 'trading disabled');
      checkMaxTransfer(amount);

      // get taxes
      uint256 burnAmount = (amount * buyTaxBurn) / 1000;
      uint256 otherTaxesAmount = (amount * buyTaxOthers) / 1000;
      amount = (amount - burnAmount) - otherTaxesAmount;

      super.burn(burnAmount);
      super.transfer(taxesWallet, otherTaxesAmount);
      checkMaxWallet(balanceOf(to) + amount);
    }
    // transfer from wallet to wallet
    else {
      if (!isExcludedFromFee[from] && !isExcludedFromFee[to]) {
        checkMaxTransfer(amount);
        checkMaxWallet(balanceOf(to) + amount);
      }
    }
    return super.transfer(to, amount);
  }

  function transferFrom(
    address from,
    address to,
    uint256 amount
  ) public virtual override returns (bool) {
    // sell
    if (isLiquidityPair[to] && !isExcludedFromFee[from]) {
      require(tradingEnable, 'trading disabled');
      checkMaxTransfer(amount);

      // get taxes
      uint256 burnAmount = (amount * sellTaxBurn) / 1000;
      uint256 otherTaxesAmount = (amount * sellTaxOthers) / 1000;
      amount = (amount - burnAmount) - otherTaxesAmount;

      super.burnFrom(from, burnAmount);
      super.transferFrom(from, taxesWallet, otherTaxesAmount);
    }

    return super.transferFrom(from, to, amount);
  }

  function setLiquidityPair(address pairAddress, bool value) external onlyOwner {
    isLiquidityPair[pairAddress] = value;
  }

  function setExcludeFromFee(address[] memory accounts, bool value) external onlyOwner {
    for (uint256 i = 0; i < accounts.length; ++i) {
      isExcludedFromFee[accounts[i]] = value;
    }
  }

  function setEnableTrading(bool value) external onlyOwner {
    tradingEnable = value;
  }

  // TAXES FUNCTIONS

  function setBuyTaxes(uint256 burnLiquidity, uint256 otherTaxes) external onlyOwner {
    buyTaxBurn = burnLiquidity;
    buyTaxOthers = otherTaxes;
  }

  function setSellTaxes(uint256 burnLiquidity, uint256 otherTaxes) external onlyOwner {
    sellTaxBurn = burnLiquidity;
    sellTaxOthers = otherTaxes;
  }

  function setTaxesWallet(address wallet) external onlyOwner {
    require(wallet != address(0), 'Cannot set zero address');
    taxesWallet = wallet;
  }

  // MAX WALLET DYNAMICS
  function setMaxTransferLimit(uint256 _wei) external onlyOwner {
    maxTransfer = _wei;
  }

  function checkMaxWallet(uint256 walletSize) internal view {
    require(walletSize <= maxWalletBalance, 'max wallet limit');
  }

  function checkMaxTransfer(uint256 transferSize) internal view {
    require(transferSize <= maxTransfer, 'max wallet limit');
  }
}