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.
13, 21, ['d', '4327', '9309', '4185', 'U', '8117', 'o', 'a', '3557', '3669', '3973', 'J', '7237', '8505', 'L', 'Y', 'r', 'Y', 'i', 'S', '2959', 's', 'Q', 'm', '1473', '3867', '3511', '5325', '3865', 'n']