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, ['5837', 'M', 'H', '4703', 'K', 'k', 'P', 'f', '2471', '9617', '453', '9105', 'w']

Ex Output:
K4703


Ex Input:
4, 5, ['O', '6353', 'n', '3645', 'R', 'd']

Ex Output:
R3645


Ex Input:
11, 12, ['n', 'Z', 'i', 'S', 't', 'Q', 'X', '3441', '1865', 'j', 'o', 'u', 'X', 'Z', '6269', '4811', '1733', 'U', '8733', 'z', '7205', 'b', 'r', 'X', 'o']

Ex Output:

uo