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:
6, 13, ['I', 'Z', '3859', 'M', '5135', 'X', 'h', '1215', 'z', '4385', 'Q', 'H', 'f']

Ex Output:
fHQ4385z1215hX


Ex Input:
3, 4, ['P', '7535', '9919', '5299', '8521', 'q', 'q', 'i']

Ex Output:
52999919


Ex Input:
2, 6, ['1909', '5939', 'w', '4493', '3317', '6371', '9353', '453', '2421']

Ex Output:

637133174493w5939