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: 2, 4, ['U', '4013', '3925', '9017', '3425', 'H', '9015', '4053', '8915', '5945', '8979', '2203']
Example Output: 710952933104

Example Input: 5, 5, ['7991', '8029', '9605', 'u', '9539', 'q', '3789', 'i', '8639', '7477']
Example Output: 9359

Example Input: 6, 16, ['T', 'a', '8129', 'm', '2751', '363', 'o', '7475', 'e', '5183', 'y', '6519', 'Z', 'p', '6953', '5671', 'E', 'q', '5763', '9199', 't', 'q', 'U', '6057', '229', '9587']
Example Output:
17653596pZ9156y3815e5747o363