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, 14, ['8035', 'N', 'R', 'U', '5691', 'j', '5635', 'c', '3641', 'K', '6871', '8663', '7525', '4031', '5395', 'r', '7549', '3023', 'Y', 'V', '1351', '2397']
Example Output: 1304525736681786K1463c5365j1965URN

Example Input: 1, 3, ['2119', '2237', 'O']
Example Output: O73229112

Example Input: 4, 12, ['6681', '7399', 'v', 'j', '679', 'O', 'i', '5613', 's', 'K', 'x', '727']
Example Output:
727xKs3165iO976j