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, 8, ['n', '9001', 't', 'e', 'W', '2287', 'f', '2735', 'z', '3065', 'J', '5609', 'e', 's', 'F']

Answer: 5372


Question: 2, 5, ['1987', '3507', '839', '3509', '9857', 'V', '9987', 'g', 'G', '7295', 'v', 'b', 'o', 'Q', 'Q', 'x', '3295', '9917', 'R', '221']

Answer: 758990539387053


Question: 2, 19, ['F', '6659', 'I', 'z', '1967', 'K', '7183', '7169', '7561', 's', '3319', '9447', '7573', '5589', '941', 'd', '6961', 'd', '2753', 'C', 'A', 'o', 'x', 'd', 'X', '5763', '9927']

Answer:
3572d1696d1499855375774499133s165796173817K7691zI9566