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.
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Question: 1, 12, ['6893', 'o', '2661', 'T', 'w', 'u', 'k', '7727', 'X', '9861', '9125', 'o', 'x', '9109']

Answer: o52191689X7277kuwT1662o3986


Question: 21, 24, ['t', '1315', '1977', '8701', 'w', '2899', '9389', 'c', 'F', '2949', '9591', 'Y', '3127', '5887', 'D', '6527', 'I', '3229', '6585', '5375', '6289', 'j', '1775', 'n', 'O', '4741']

Answer: n5771j9826


Question: 23, 25, ['847', 'F', '3497', 'L', '1147', '7487', '6553', 'J', 'L', '8817', 'E', '4697', 'A', '7949', '9207', '681', 'O', 's', '7937', 'P', 'j', 'E', 'j', 'v', '9551', '7383', 'A']

Answer:
1559vj