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, 10, ['A', '2605', '2029', 'e', 'j', 'P', '5369', '1263', '2071', 'u', '3793', '6137', 'h', '6993']

Ex Output:
u207112635369P


Ex Input:
2, 3, ['D', '373', '8515', 'G', 'G', 'c']

Ex Output:
8515373


Ex Input:
2, 19, ['6807', 'i', '6915', '917', '8771', 'H', '5835', '553', '3457', 'e', '1639', 'i', 'R', 'm', 'B', 'e', '2173', 'I', '5503', 'R', '1657', 'a', '3761', 'o', 'K', '4265', 'W']

Ex Output:

5503I2173eBmRi1639e34575535835H87719176915i