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: 5, 7, ['1245', '6761', 'w', 'A', '2303', '1045', 'H', '6193', '6147', 'H', 'S', '305', '7895']

Answer: H54013032


Question: 2, 13, ['o', 'B', '5117', 'h', '3007', '2037', 'j', '2651', 'b', 'b', '8977', 'v', 'U', 'l', '3949', 'e', 'x', '6539', '3663', '1359', '2851']

Answer: Uv7798bb1562j73027003h7115B


Question: 12, 13, ['2695', '7683', '855', '7987', '5285', 'p', '1977', '6349', '2157', 'D', '7071', '2147', 'w', 'I', 'Y', 'u', 'g', 'V', 'A', '9105', '7371', 'D', 'l', '5721', 'n']

Answer:
w7412