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, 7, ['6177', '2355', 'z', 'f', 'Y', '5807', '5807', 'k', '6209', 'g', 'Z', 'r', 'E']

Ex Output:
58075807Yfz23556177


Ex Input:
3, 15, ['2345', 'c', 'B', '2961', '189', '2409', '3715', '6803', '3947', 'u', '7099', 'w', 'f', 'M', 'Q', '7533', 'm']

Ex Output:
QMfw7099u39476803371524091892961B


Ex Input:
5, 6, ['329', '7715', 'W', '6787', '9117', '2119', 'K', '9635', 'z', 'V']

Ex Output:

21199117