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:
3, 4, ['R', '8853', '1197', 'z', 'n', 'o', 'x', '3467', '3415', '5109', 'C', '6529', 'F', '529', '9005', '8595', 'a', '6197', 'X', '1343', 'o', 'G']

Ex Output:
z1197


Ex Input:
5, 5, ['u', '7295', 'e', 'a', 'N', '8701', 'r', '3107']

Ex Output:
N


Ex Input:
1, 1, ['u', '7501']

Ex Output:

u