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:
2, 2, ['2475', '621']

Ex Output:
621


Ex Input:
1, 2, ['231', '4551', '3343']

Ex Output:
4551231


Ex Input:
7, 10, ['o', 'u', 't', 'F', 't', 'Y', '9831', 'A', 'i', 'U', '1135', '7189', 'Z', '8371']

Ex Output:

UiA9831