instruction:
In this task, you are given inputs i, j, and A, where i and j are integers and A is a list. You need to find all elements of A from the ith element to the jth element, reverse the order in which they occur, and then concatenate them to output the resultant 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 concatenate the elements and then reverse the string.
question:
3, 12, ['G', 'C', 'B', '3939', 'F', '8183', '1127', 'C', '4053', 'e', '6827', 'c', 'p', '4677', 'O', '3351', '5097', '7389']
answer:
c6827e4053C11278183F3939B


question:
5, 8, ['977', '9427', 'b', 'y', 'Q', 'z', '8989', '6961', '5259', '499', 'W', 'F', '8641', 'f', 'L', '1541', '3351', 'd']
answer:
69618989zQ


question:
5, 6, ['5039', '8121', '7653', '5403', '2777', '6527', '371', 'I', '645', 'G', '3509', 'd', 't']
answer:

65272777