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.

Example Input: 1, 15, ['o', '7861', '5335', '835', 'e', '8077', 'd', '3099', 'F', 'q', 'C', 'F', 'M', '4715', '2669', 'D', '1517', '4361', 'e', 'v', 'P', '6813', 'q', '9075', '9997', '8799', 'L']
Example Output: 96625174MFCqF9903d7708e53853351687o

Example Input: 2, 4, ['4047', 'S', '4249', '1735', '207']
Example Output: 53719424S

Example Input: 4, 6, ['G', '253', '9809', 'j', 'K', '5235', 'A', '6485', 'X', '9887', '2235', 'g', '2969']
Example Output:
5325Kj