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: 17, 21, ['5503', '2979', '6307', '633', 'n', '9339', '5829', '5291', '8967', 'i', '9063', '975', 'G', '9187', '3227', 'A', '3487', '8187', 'H', '6097', 'H']

Answer: H7906H78187843


Question: 1, 1, ['C', '6223']

Answer: C


Question: 8, 24, ['E', 'W', 'i', 'R', '587', '3289', 'S', '491', 'X', 'P', 'Z', 'C', 'v', 'R', 'Y', '7043', '3493', '4317', '87', '565', 'q', '6197', 'E', '7495', '3673', 'a', '3625', '6015', '2909']

Answer:
5947E7916q56578713439433407YRvCZPX194