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, 3, ['X', '8243', '1209']
Example Output: 90213428

Example Input: 2, 3, ['4541', 'B', '9655', '8453', 'r', 'i', 'P']
Example Output: 5569B

Example Input: 14, 19, ['817', 'C', '2883', '1103', '5093', 'L', '3477', 'D', '9975', 'Y', 'g', '4067', 'G', 'z', '5901', 'r', 'H', '3069', '7589', '5031', '2911', 'P', 'I', '497', 'C', 'O', 'O']
Example Output:
98579603Hr1095z