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: 1, 2, ['4857', '9647']

Answer: 74697584


Question: 13, 15, ['L', 'A', '2959', 'g', '7157', '9131', 'o', 'D', 'q', 'd', 'A', '4249', 'K', 'U', '4805', 'h', '7981']

Answer: 5084UK


Question: 3, 15, ['P', '6123', 'Q', 'B', 'p', '6583', 'm', '1059', 'M', '411', '749', 'u', 'S', 'v', 'A']

Answer:
AvSu947114M9501m3856pBQ