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.
5, 9, ['6615', 'B', '6751', 'Q', 'Z', '3239', '4221', '4179', 'R', 'n', 'G', '7109', 'Y', '8887', '7199', 'b', 'u', '9651', '6275', 'o', '9379', '2667', 'c', '445', '8601', 'y', 'K', '8985', 'x', 'L']