In this task, you are given inputs 'i', 'j', and A, where 'i' and 'j' are integers and A is a list. A list is shown by two brackets and comma-separated numbers and characters inside, like ['1', '12', 'l']. You need to concatenate all elements of A from the ith element to the jth element, and then reverse the resulting string. 'i' and 'j' will be non-negative, and will always have a value less than the length of A. 'i' will always be less than 'j'. Perform the operations in order, i.e., do not reverse first and then concatenate.

Ex Input:
1, 3, ['4523', '3909', 'V', '7275', '5721', '6113', 'G', '5319', '3519']

Ex Output:
V90933254


Ex Input:
7, 10, ['417', '8131', '7239', '9699', 'z', 'H', 'P', '9349', '4835', '3217', '9899']

Ex Output:
712353849439P


Ex Input:
3, 15, ['9561', 's', '4671', 'h', 'w', 'j', 'x', '1535', 'L', 'H', 'u', 'J', 'D', 'p', '6693', '547', '9839', 'U', 'P', '4777', '7951', '4213', '1279', 'H', 'S']

Ex Output:

3966pDJuHL5351xjwh1764