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.

Q: 16, 19, ['g', 'c', '157', '7487', 'Q', 'x', '7719', '3859', 'O', '4597', 'Q', 'o', '103', 'n', '1513', 'n', '1667', '6417', 'i', '2685', '1259', '6483', '4381', 'g', 'c', '3849', 'Q', '6591']

A: i71467661n
****
Q: 1, 1, ['f', 'E', 'G', '9657']

A: f
****
Q: 15, 20, ['n', '6591', 's', 'q', 'O', '9417', 'w', '3039', '4605', '7523', 'Z', '9685', 'F', 'O', '4195', 'B', '8249', 'a', '6949', '1539', 'l']

A:
93519496a9428B5914
****