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, 4, ['6145', 'D', '2827', 'y']

Ex Output:
y2827D6145


Ex Input:
1, 2, ['7921', 'Q']

Ex Output:
Q7921


Ex Input:
2, 3, ['1421', 'H', 'T', '2899', 'N', '1535', 'c', '1231', '9663', '3125', 'N', '231', 'u', '8827', '7275', 'd', '5793']

Ex Output:

TH