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, 13, ['217', '841', 'G', 'N', '5667', '9343', '8067', '7679', 'T', 'Z', 'G', '6499', 'n']
Example Output: n9946GZT9767760834397665

Example Input: 2, 8, ['O', '4833', '7055', '9891', '9117', '1571', 'S', 'Z', '7741', 'W', 't']
Example Output: ZS17517119198955073384

Example Input: 19, 20, ['1829', 'x', 't', '6281', '8285', '5521', 'F', 's', '2123', 'f', '6649', 'o', 'D', '4137', '7769', '2337', '5597', '5045', '4691', '3773', 'S', 'p', '9031', 'u', '8479']
Example Output:
37731964