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: 2, 8, ['O', '4833', '7055', '9891', '9117', '1571', 'S', 'Z', '7741', 'W', 't']

Answer: ZS17517119198955073384


Question: 2, 2, ['9085', '5983', '3197', 'C']

Answer: 3895


Question: 9, 11, ['n', 'n', 'h', 'v', '755', 'a', 'o', 'i', '3369', '1935', '5605', 'r', '2393', '5375', '317', 'S', 'P', 'T', '6535', 'P', '2315']

Answer:
506553919633