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.

[EX Q]: 1, 4, ['2639', '497', '2353', '5375', '1053', '6001']
[EX A]: 537523534972639

[EX Q]: 1, 3, ['u', 'D', '6391']
[EX A]: 6391Du

[EX Q]: 3, 23, ['5685', '6529', '4949', '1933', 's', 'g', 'h', 'P', '3655', 'L', 'A', 'M', '5255', 'a', '5751', 'o', '6753', '1773', '9395', '6231', 'N', 'h', 'a', '2887']
[EX A]:
ahN6231939517736753o5751a5255MAL3655Phgs19334949