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: 10, 13, ['K', '6565', 'A', '5073', '1249', '2817', '3663', '3799', 'G', '2707', '3405', '5999', '5577', 'c', 'p', 'V', '8373', 'e', 'W', '5977', 's', 'p', 'E', '5425']
Example Output: 7755999550437072

Example Input: 3, 6, ['p', 'H', '2775', '2567', '7787', 'D', '3807', '4817', '5399']
Example Output: D787776525772

Example Input: 13, 18, ['9419', '8743', '4819', 'r', 'w', 'h', 'Q', '7503', 'v', 'x', '2439', '8353', 'T', '7959', 'f', '633', '8241', '1545']
Example Output:
54511428336f9597T