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: 9, 18, ['k', 'p', 'h', 'h', '23', 'j', 'H', '8681', 'P', 'c', '8375', '4243', '8007', 'z', '2155', '9641', 'J', 'k', 'Z']

Answer: kJ14695512z700834245738cP


Question: 1, 2, ['4857', '9647']

Answer: 74697584


Question: 2, 25, ['2287', 'k', 'U', '749', '8271', 'U', '4077', '3205', '7797', '6887', 'z', 'h', 'w', 'D', '1271', 'n', 'k', 'B', '3887', 'D', '5743', 'B', '9199', '9609', 'Z', 'o']

Answer:
Z90699919B3475D7883Bkn1721Dwhz7886797750237704U1728947Uk