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.

Input: Consider Input: 16, 16, ['7539', 'A', '8589', 'T', 'Q', 'u', 'z', 'A', '9751', '2913', '7453', '5649', 'Q', 'H', 'Z', 'O', 'v', 'V']

Output: O


Input: Consider Input: 4, 9, ['6451', '9261', 's', '5587', 'D', '7595', 'D', 'E', 's', '8841', 'Y']

Output: sED5957D7855


Input: Consider Input: 1, 2, ['O', '3209', '381', '1183', '6765']


Output: 9023O