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, ['i', '2555', 'G', '4549', 'a', '7443', '5361']
Example Output: 9454G5552

Example Input: 21, 24, ['t', '1315', '1977', '8701', 'w', '2899', '9389', 'c', 'F', '2949', '9591', 'Y', '3127', '5887', 'D', '6527', 'I', '3229', '6585', '5375', '6289', 'j', '1775', 'n', 'O', '4741']
Example Output: n5771j9826

Example Input: 8, 21, ['u', '8163', '6963', '5955', '6541', 'X', 'n', 'w', '2265', 'Y', '2589', 'Z', 'C', '9421', '1461', 'j', 'n', 'O', 'D', 'Y', '4177', '7583', '9667', 'D', '5779', 'j', '371', '7751', 'C', 'Z']
Example Output:
7714YDOnj16411249CZ9852Y5622w