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: 5, 6, ['J', '6957', 's', 'l', 'C', 'o', 'H', 'u', 'g', 'P', 'N', 'v', 'S', '6145', 'o', 'z', 'B', 'o', 'E', 'f', '817', 'I', 'k', 'I', '7331', 'x']
Example Output: oC

Example Input: 2, 4, ['4047', 'S', '4249', '1735', '207']
Example Output: 53719424S

Example Input: 11, 11, ['x', 's', '3481', 'o', 'F', '6015', '5429', '2469', 'F', '5979', '2831', '6951', '4293', '261', 'N', '6257', '4363', '2969', '1519', '3823', '5541', 'T', '4393', 'H', 'F', '9887', '4285', '8817', 'p']
Example Output:
1382