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.
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Question: 8, 16, ['O', 'e', '5857', '6759', '9787', 'e', 'j', '9173', 's', '4135', 'j', 'I', 'g', 'f', '2129', 'n', '3337']

Answer: n2129fgIj4135s9173


Question: 11, 20, ['T', 'U', '8683', 'N', 'X', 'F', '1307', 'Y', '1347', '6855', 'Y', '2007', '8981', '1943', 'F', '5463', '9905', 'L', '3509', '5787', 'b']

Answer: 57873509L99055463F194389812007Y


Question: 7, 7, ['2325', 'E', 'p', 'G', '9723', '5423', 'h', '7599', '8607', 'Q', 'G', '6235', 'u', '1513', '7563', 'o', '8891', '6943', '6531', '7285', 'a']

Answer:
h