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:
4, 16, ['9593', '3873', 'f', 'l', 'Z', '6157', 'n', 'l', '827', '9127', '143', 'J', '2223', 'A', 'o', '4733', 'C', 'U', 'V', '2613', 'r', 't', 'Q', 'l', 'H', '5189', 'J', 'I']

Ex Output:
3374oA3222J3417219728ln7516Zl


Ex Input:
4, 5, ['3001', '661', 'S', 'N', '7919']

Ex Output:
9197N


Ex Input:
6, 7, ['g', '4951', '6981', 'h', 'f', '5491', 'n', 'i', '3985', 'v', '669', '1453', '5577', 'R', '5773', '8083', '3543', 'q']

Ex Output:

n1945