user: Please show me the C implementation that matches the assembly code listed below:

```asm
<levenshtein>:
  endbr64
  push   %rbp
  mov    %rsp,%rbp
  sub    $0x50,%rsp
  mov    %rdi,-0x38(%rbp)
  mov    %rsi,-0x40(%rbp)
  mov    %edx,-0x44(%rbp)
  mov    %ecx,-0x48(%rbp)
  mov    %r8d,-0x4c(%rbp)
  mov    %r9d,-0x50(%rbp)
  mov    -0x38(%rbp),%rax
  mov    %rax,%rdi
  call   <strlen@plt>
  mov    %eax,-0x28(%rbp)
  mov    -0x40(%rbp),%rax
  mov    %rax,%rdi
  call   <strlen@plt>
  mov    %eax,-0x24(%rbp)
  mov    -0x24(%rbp),%eax
  add    $0x1,%eax
  cltq
  shl    $0x2,%eax
  mov    %eax,%edi
  call   <malloc@plt>
  mov    %rax,-0x20(%rbp)
  mov    -0x24(%rbp),%eax
  add    $0x1,%eax
  cltq
  shl    $0x2,%eax
  mov    %eax,%edi
  call   <malloc@plt>
  mov    %rax,-0x18(%rbp)
  mov    -0x24(%rbp),%eax
  add    $0x1,%eax
  cltq
  shl    $0x2,%eax
  mov    %eax,%edi
  call   <malloc@plt>
  mov    %rax,-0x10(%rbp)
  movl   $0x0,-0x2c(%rbp)
  jmp    L25
L109:
  mov    -0x2c(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x18(%rbp),%rax
  add    %rax,%rdx
  mov    -0x2c(%rbp),%eax
  imul   -0x4c(%rbp),%eax
  mov    %eax,(%rdx)
  addl   $0x1,-0x2c(%rbp)
L25:
  mov    -0x2c(%rbp),%eax
  cmp    -0x24(%rbp),%eax
  jle    L109
  movl   $0x0,-0x30(%rbp)
  jmp    L96
L86:
  mov    -0x30(%rbp),%eax
  add    $0x1,%eax
  imul   -0x50(%rbp),%eax
  mov    %eax,%edx
  mov    -0x10(%rbp),%rax
  mov    %edx,(%rax)
  movl   $0x0,-0x2c(%rbp)
  jmp    L16
L34:
  mov    -0x2c(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%ecx
  mov    -0x30(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x38(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%edx
  mov    -0x2c(%rbp),%eax
  movslq %eax,%rsi
  mov    -0x40(%rbp),%rax
  add    %rsi,%rax
  movzbl (%rax),%eax
  cmp    %al,%dl
  setne  %al
  movzbl %al,%eax
  imul   -0x48(%rbp),%eax
  mov    %eax,%edx
  mov    -0x2c(%rbp),%eax
  cltq
  add    $0x1,%rax
  lea    0x0(,%rax,4),%rsi
  mov    -0x10(%rbp),%rax
  add    %rsi,%rax
  add    %ecx,%edx
  mov    %edx,(%rax)
  cmpl   $0x0,-0x30(%rbp)
  jle    L14
  cmpl   $0x0,-0x2c(%rbp)
  jle    L14
  mov    -0x30(%rbp),%eax
  cltq
  lea    -0x1(%rax),%rdx
  mov    -0x38(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%edx
  mov    -0x2c(%rbp),%eax
  movslq %eax,%rcx
  mov    -0x40(%rbp),%rax
  add    %rcx,%rax
  movzbl (%rax),%eax
  cmp    %al,%dl
  jne    L14
  mov    -0x30(%rbp),%eax
  movslq %eax,%rdx
  mov    -0x38(%rbp),%rax
  add    %rdx,%rax
  movzbl (%rax),%edx
  mov    -0x2c(%rbp),%eax
  cltq
  lea    -0x1(%rax),%rcx
  mov    -0x40(%rbp),%rax
  add    %rcx,%rax
  movzbl (%rax),%eax
  cmp    %al,%dl
  jne    L14
  mov    -0x2c(%rbp),%eax
  cltq
  add    $0x1,%rax
  lea    0x0(,%rax,4),%rdx
  mov    -0x10(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%eax
  mov    -0x2c(%rbp),%edx
  movslq %edx,%rdx
  shl    $0x2,%rdx
  lea    -0x4(%rdx),%rcx
  mov    -0x20(%rbp),%rdx
  add    %rcx,%rdx
  mov    (%rdx),%ecx
  mov    -0x44(%rbp),%edx
  add    %ecx,%edx
  cmp    %edx,%eax
  jle    L14
  mov    -0x2c(%rbp),%eax
  cltq
  shl    $0x2,%rax
  lea    -0x4(%rax),%rdx
  mov    -0x20(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%ecx
  mov    -0x2c(%rbp),%eax
  cltq
  add    $0x1,%rax
  lea    0x0(,%rax,4),%rdx
  mov    -0x10(%rbp),%rax
  add    %rdx,%rax
  mov    -0x44(%rbp),%edx
  add    %ecx,%edx
  mov    %edx,(%rax)
L14:
  mov    -0x2c(%rbp),%eax
  cltq
  add    $0x1,%rax
  lea    0x0(,%rax,4),%rdx
  mov    -0x10(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%eax
  mov    -0x2c(%rbp),%edx
  movslq %edx,%rdx
  add    $0x1,%rdx
  lea    0x0(,%rdx,4),%rcx
  mov    -0x18(%rbp),%rdx
  add    %rcx,%rdx
  mov    (%rdx),%ecx
  mov    -0x50(%rbp),%edx
  add    %ecx,%edx
  cmp    %edx,%eax
  jle    L20
  mov    -0x2c(%rbp),%eax
  cltq
  add    $0x1,%rax
  lea    0x0(,%rax,4),%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%ecx
  mov    -0x2c(%rbp),%eax
  cltq
  add    $0x1,%rax
  lea    0x0(,%rax,4),%rdx
  mov    -0x10(%rbp),%rax
  add    %rdx,%rax
  mov    -0x50(%rbp),%edx
  add    %ecx,%edx
  mov    %edx,(%rax)
L20:
  mov    -0x2c(%rbp),%eax
  cltq
  add    $0x1,%rax
  lea    0x0(,%rax,4),%rdx
  mov    -0x10(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%eax
  mov    -0x2c(%rbp),%edx
  movslq %edx,%rdx
  lea    0x0(,%rdx,4),%rcx
  mov    -0x10(%rbp),%rdx
  add    %rcx,%rdx
  mov    (%rdx),%ecx
  mov    -0x4c(%rbp),%edx
  add    %ecx,%edx
  cmp    %edx,%eax
  jle    L7
  mov    -0x2c(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x10(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%ecx
  mov    -0x2c(%rbp),%eax
  cltq
  add    $0x1,%rax
  lea    0x0(,%rax,4),%rdx
  mov    -0x10(%rbp),%rax
  add    %rdx,%rax
  mov    -0x4c(%rbp),%edx
  add    %ecx,%edx
  mov    %edx,(%rax)
L7:
  addl   $0x1,-0x2c(%rbp)
L16:
  mov    -0x2c(%rbp),%eax
  cmp    -0x24(%rbp),%eax
  jl     L34
  mov    -0x20(%rbp),%rax
  mov    %rax,-0x8(%rbp)
  mov    -0x18(%rbp),%rax
  mov    %rax,-0x20(%rbp)
  mov    -0x10(%rbp),%rax
  mov    %rax,-0x18(%rbp)
  mov    -0x8(%rbp),%rax
  mov    %rax,-0x10(%rbp)
  addl   $0x1,-0x30(%rbp)
L96:
  mov    -0x30(%rbp),%eax
  cmp    -0x28(%rbp),%eax
  jl     L86
  mov    -0x24(%rbp),%eax
  cltq
  lea    0x0(,%rax,4),%rdx
  mov    -0x18(%rbp),%rax
  add    %rdx,%rax
  mov    (%rax),%eax
  mov    %eax,-0x30(%rbp)
  mov    -0x20(%rbp),%rax
  mov    %rax,%rdi
  call   <free@plt>
  mov    -0x18(%rbp),%rax
  mov    %rax,%rdi
  call   <free@plt>
  mov    -0x10(%rbp),%rax
  mov    %rax,%rdi
  call   <free@plt>
  mov    -0x30(%rbp),%eax
  leave
  ret
```

assistant: ```c
int levenshtein(const char *string1, const char *string2, int w, int s, int a, int d) {
  int len1 = strlen(string1), len2 = strlen(string2);
  int *row0 = malloc(sizeof(int) * (len2 + 1));
  int *row1 = malloc(sizeof(int) * (len2 + 1));
  int *row2 = malloc(sizeof(int) * (len2 + 1));
  int i, j;
  for (j = 0; j <= len2; j++) {
    row1[j] = j * a;
  }
  for (i = 0; i < len1; i++) {
    int *dummy;
    row2[0] = (i + 1) * d;
    for (j = 0; j < len2; j++) {
      row2[j + 1] = row1[j] + s * (string1[i] != string2[j]);
      if (i > 0 && j > 0 && string1[i - 1] == string2[j] && string1[i] == string2[j - 1] && row2[j + 1] > row0[j - 1] + w) {
        row2[j + 1] = row0[j - 1] + w;
      }
      if (row2[j + 1] > row1[j + 1] + d) {
        row2[j + 1] = row1[j + 1] + d;
      }
      if (row2[j + 1] > row2[j] + a) {
        row2[j + 1] = row2[j] + a;
      }
    }
    dummy = row0;
    row0 = row1;
    row1 = row2;
    row2 = dummy;
  }
  i = row1[len2];
  free(row0);
  free(row1);
  free(row2);
  return i;
}
```