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, ['G', '6469']

Ex Output:
6469


Ex Input:
4, 7, ['n', 'X', '7943', '49', 'm', '4459', 'O', 'a', '4759', '1551', 'c', '6053', '6213', '6997', '7613', '669', 'e']

Ex Output:
O4459m49


Ex Input:
4, 14, ['A', '8657', '4821', 'P', '2479', 'T', 'p', '9849', 'c', '981', 'v', '8633', 'O', 'o', 't', 'X', 'W', 'T', '4597', '983', '9569', 'E', '8401', '5841']

Ex Output:

oO8633v981c9849pT2479P