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, ['5983', 'I', '9531', 'U', 'P', '1383', 'Y']
Example Output: U1359I

Example Input: 2, 18, ['8671', 'd', '5109', '1915', 'h', '2777', '3087', '9861', '8597', 'P', '4505', 'j', 'M', 'O', 's', 'Q', '2703', 'X', 'l', 'g', '1801']
Example Output: X3072QsOMj5054P7958168978037772h51919015d

Example Input: 3, 7, ['725', 'C', 'S', '2133', '8313', '1585', '5081', '4905', '999', 'f', '9323', 'D', 'm', '2245', '8769', '6407']
Example Output:
1805585131383312S