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: 4, 4, ['I', 'i', 'b', '2703']

Output: 3072


Input: Consider Input: 4, 20, ['p', '1643', 'O', '5867', 'Y', 'j', '2411', 'Z', '2563', '4757', 'B', 'b', '7489', '815', 'c', '6631', '8571', '6537', 'm', 'T']

Output: Tm735617581366c5189847bB75743652Z1142jY7685


Input: Consider Input: 3, 14, ['D', '9857', '3237', '9855', 'r', '4027', 'a', '3999', '7667', '3479', 'F', 'W', '7075', 'J', 'i', 'F', 'J', 'C', '1321', '3349', 'C', 'V', 'Y', '6779', 'z', '4929', 'z']


Output: J5707WF974376679993a7204r55897323