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, 12, ['p', '6907', 'D', 'B', 'z', 'S', '3197', 'b', 'K', 'B', '2925', 'i', 'U', 'y', '5577', '1065', 'e', '7763', 's', '9493']
Example Output: i5292B

Example Input: 2, 3, ['i', '7465', '1315']
Example Output: 51315647

Example Input: 13, 15, ['N', 'z', '8721', '8023', '369', 'c', 'L', 'V', '4623', '4081', 'S', '8829', '1127', 'x', '9747', 'U']
Example Output:
7479x7211