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.
6, 16, ['X', '6869', '9', 'H', '4625', '1575', '6197', '3625', 'B', '3503', '1531', 'z', 'o', '8111', 'B', '9625', '7169', 'q', 's', 'h', '6207', 'B', '1795', '5809', 'w']