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 Input:
1, 5, ['9965', 'a', 'P', 'F', '3811', '4375']

Ex Output:
3811FPa9965


Ex Input:
8, 24, ['d', '2371', '7971', 'C', 'P', 'M', 'm', 'L', '2563', '1489', '2649', 'Y', 'K', '6075', '9543', 'q', '3687', 'b', 'U', '4779', '8109', 'W', 'K', '7385']

Ex Output:
7385KW81094779Ub3687q95436075KY264914892563L


Ex Input:
3, 6, ['L', '1805', 'a', 'i', 'X', '471', 'f', '6279', '9353', '2911', '6849']

Ex Output:

471Xia