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:
13, 17, ['y', '9627', '2851', 'E', 'l', '2411', 'c', 'v', 'K', 'r', 'R', 'p', '3147', 'A', '3531', '3473', 'u', '929', '2245', 'S', 'u', '9351', 'P']

Ex Output:
u34733531A3147


Ex Input:
3, 5, ['9801', '6309', '4085', 'U', 'B']

Ex Output:
BU4085


Ex Input:
5, 6, ['P', 'm', 'D', '9859', '857', 'c', '9621', '7077']

Ex Output:

c857