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, ['s', 'n', '6721', 'W', 'H']
[EX A]: W6721ns

[EX Q]: 5, 5, ['u', '7295', 'e', 'a', 'N', '8701', 'r', '3107']
[EX A]: N

[EX Q]: 12, 19, ['A', '3381', '6305', '435', 'w', '2117', 'z', 'w', '6515', '9039', '8055', 'y', '7987', '5033', 'g', 'P', '7297', '639', 'N', 'y', '461']
[EX A]:
N6397297Pg50337987y