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:
9, 18, ['p', '5557', 'r', 'I', 'k', '4673', '5355', '3105', 'm', '6655', '1505', '2413', '7439', 'b', 'K', '7053', '2385', '8935', '9949', '5351', '4423', 'y', 'p', '7891', 'A', '1271', 'o', 'z']

Ex Output:
893523857053Kb7439241315056655m


Ex Input:
1, 1, ['S', 'q', 'I', '5787', 'K']

Ex Output:
S


Ex Input:
4, 4, ['c', '9215', 'P', '3331', '9547', 'E']

Ex Output:

3331