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, 19, ['C', 'D', 'C', 'Z', '3843', 'j', 'T', 'o', '9147', '2915', 'n', 'N', '939', 'S', '2457', '7789', 's', 'z', 'V']
Example Output: Vzs98777542S939Nn51927419oTj3483ZCD

Example Input: 7, 8, ['9287', 'V', 't', 'W', 'W', 'w', 'N', 'T', 'Y']
Example Output: TN

Example Input: 5, 6, ['7319', 'U', 'Z', '1163', '8123', '4861', '117', '3893', '2489', 'S', '1511']
Example Output:
16843218