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: 3, 3, ['5819', '3317', '451', '5811']
Example Output: 154

Example Input: 1, 4, ['6969', 'P', '8161', '6347', 'P', 'S', 'z']
Example Output: 74361618P9696

Example Input: 6, 6, ['Q', '2491', '6033', 'T', '9861', 'A', '5413', 'P', 'z']
Example Output:
A