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:
3, 4, ['6025', 'W', '4529', 'D', '9719', '6937', '1967', 'U']

Ex Output:
D4529


Ex Input:
2, 3, ['l', 'D', '6731', 'g', '4587', '6771', '8663', '3813', 'l']

Ex Output:
6731D


Ex Input:
7, 16, ['Q', 'K', 'Z', '3261', '5479', '1197', '5699', '4055', 's', '1807', 'z', '8639', 'r', '4759', 't', '3803', '5007', '9723']

Ex Output:

3803t4759r8639z1807s40555699