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: 6, 13, ['a', 't', '3699', 'H', 'c', 'S', '2713', '5419', 'q', '7877', 'q', 'U', '833', '8411', '2003', '5373', 'P', '2913']

Answer: 338Uq7787q91453172S


Question: 3, 4, ['6865', 'A', 's', 'o', '1989', 'i', '613', 'S', 's']

Answer: os


Question: 2, 10, ['6855', '1035', 'R', '7621', 'U', '8321', '7701', 'q', '9809', 'l', 'G', '9319', '8363', 'C', '3765', 'w', '9225', '7909', 'e', '499', 'K', '2341', 'f', '8747', 'F', 'n', '6647']

Answer:
l9089q10771238U1267R5301