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: 7, 8, ['1601', 'M', '4289', 'n', 'r', '8973', 'F', 'Y', 'v', '3357']

Answer: YF


Question: 3, 5, ['w', 'i', 'X', '9493', 'g', 'K', 'h', 'X']

Answer: g3949X


Question: 2, 10, ['7615', 'N', '3131', '7507', 'j', 'b', 'o', 'm', '6399', 'q', 'T']

Answer:
q9936mobj70571313N