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:
4, 5, ['5611', '2101', '3829', 'H', 's', '6545', 'X', 'T', 'q', 'p', 'O', 'C', 'U']

Ex Output:
sH


Ex Input:
11, 20, ['T', 'U', '8683', 'N', 'X', 'F', '1307', 'Y', '1347', '6855', 'Y', '2007', '8981', '1943', 'F', '5463', '9905', 'L', '3509', '5787', 'b']

Ex Output:
57873509L99055463F194389812007Y


Ex Input:
4, 27, ['C', 'X', 'L', '3033', 'R', '4857', 'H', '2693', '7245', '6411', 'a', 'W', '4497', '1301', '2119', '5521', 'c', 'p', '9553', '1229', 'Z', '2257', '9225', '8549', '3817', 's', '7969', 'z', '1743', '805']

Ex Output:

7969s3817854992252257Z12299553pc5521211913014497Wa641172452693H4857R3033