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, 14, ['d', 'Y', 'G', '5849', '6425', 't', '7727', '7863', '131', '6013', '9683', 'Z', 'n', 'y', 'U', 'g', '8675', '1377', 'L', 'u', '6811']

Answer: ynZ3869310613136877277t52469485GYd


Question: 1, 15, ['5997', '2005', '8529', 'j', 'T', '9729', 'T', 'm', '357', '779', '2253', '725', 'z', '4149', '2913', '8135', 'Q', 'B']

Answer: 31929414z5273522977753mT9279Tj925850027995


Question: 16, 20, ['l', '5735', 'D', 'm', '3991', '9899', 'Q', 'w', '3127', 'L', '8969', '941', 'f', 'c', '7925', 'r', 'a', '9439', 'K', '9731', '6105']

Answer:
1379K9349ar