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: 15, 19, ['s', '2569', '1713', 't', 'R', 'G', '5779', 'o', '2667', 'W', '9283', '2419', '6745', 'f', 's', '4131', '8337', 'q', '5275', 'Y', 'N', 'k', 'K', '1937', '3983', '759', '471', 'J', '3213']
Example Output: 5725q73381314s

Example Input: 4, 7, ['3421', '6129', '593', '203', '2731', '1393', '9739', '1087', '3453', '1389', 'W', 'D', 'b', '9261']
Example Output: 937939311372302

Example Input: 7, 13, ['6695', 'M', 'A', 'C', 'g', '3673', 'v', '8191', '4045', 'd', 'k', 'B', 'T', '9759', 'a', 'c', '7413', '5191', 'M', '8907', 'w', 't', 'V', 'b', 'F', 'a']
Example Output:
TBkd54041918v