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:
12, 16, ['u', '551', 'L', 'g', 'd', '2453', 'J', 'f', '8211', 'L', '241', 'l', 'G', 'F', '9043', 'f', '3977', 'P', '4371', '7687', 'A', '8181', '5251', 't', '6837']

Ex Output:
f9043FGl


Ex Input:
1, 3, ['2351', 'k', '2321']

Ex Output:
2321k2351


Ex Input:
1, 13, ['7495', '9371', 'g', '193', '2083', '7105', '361', 'm', 'O', '7437', 'r', '2485', '5453', 'o', 'a', 'B', '601', '6309', 'j', 'U', '9049', '1823', 'L']

Ex Output:

54532485r7437Om36171052083193g93717495