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: 8, 9, ['E', '4081', '2021', '2585', 'I', '6983', '3271', 'K', '4793', 'd', '2835', 'Q', 'T', 'f', '2133', 's', 'G', '93', 'B', 'n', 'b', 'v', 'N', 'B', '6625', 'v', 'd', '5407']

Answer: 3974K


Question: 10, 18, ['S', 'S', '6525', '3017', '9729', '5747', '4409', '9501', '4083', 'f', 'X', 'B', 'u', '5967', '9949', '7227', '6993', '8105', 'n', 'C', '2131', '3105', 'd', 'E']

Answer: 50183996722794997695uBXf


Question: 4, 14, ['k', '2017', 't', '6793', 'w', 'y', 't', 'z', 'u', '6195', '2603', '8977', '2725', '1733', 'U', '1045', 'x', '1147', '5969']

Answer:
33715272779830625916uztyw3976