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: 3, 5, ['z', 'w', 't', '3663', '9611', '3737', '4277']

Answer: 11693663t


Question: 2, 3, ['6875', 'D', 'r']

Answer: rD


Question: 7, 16, ['U', 'Q', '403', 'l', '8867', 'H', 'O', 'T', '4501', '5273', '9721', '6861', 'p', '4715', 'j', '7315', '4253', '1377', 'Y', '3911', 'x']

Answer:
5137j5174p1686127937251054TO