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]: 19, 20, ['x', '6239', 'D', 'l', 'Y', 'd', '6405', 'l', '2629', '4743', '8271', '3749', 'W', 'r', '9153', '2941', '6477', '2623', 'F', 'J']
[EX A]: JF

[EX Q]: 12, 13, ['I', 'y', 'w', 'a', 'Q', 'f', '2619', 'q', 'e', '8477', 'm', 'C', '203', 'C', '7237', 'h', 'C', 'M']
[EX A]: 203C

[EX Q]: 16, 23, ['675', '375', '1013', 'n', 'd', '4803', '1637', '3225', 'L', 'a', 'O', 'N', '9897', '9113', '6851', 'O', '8345', '4103', '5847', '8263', '6821', 'w', '2293', 'A', '6545', '9795']
[EX A]:
2293w68218263584741038345O