Instructions: 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.
Input: 9, 17, ['3407', '2119', 'K', '6905', 'f', '1675', 'q', '6229', 'W', 'x', 'J', '3767', '2553', '2551', 'H', '9121', 'J', 'D', 'V', '4569', 'o', 'f', 'R', '7655']
Output:
J1219H155235527673JxW