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, 7, ['9969', 'u', '9811', 't', 'z', '8347', 'i', 'O', '5897']

Answer: i7438zt1189u


Question: 4, 4, ['w', '3895', '4989', '7875', 'u']

Answer: 5787


Question: 22, 27, ['a', 'n', '6023', '7519', '2897', '1633', 'C', '4579', 'w', 'F', 'c', 'x', '4965', 'X', '5849', '4993', '2607', 'l', '2981', '753', 'X', '9329', 'l', 'r', '7347', 'k', 'F', 'm', '8481']

Answer:
Fk7437rl9239