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:
2, 13, ['P', 'U', 'k', '6209', 'y', 'P', '273', '3377', '5205', 'p', '1079', 'O', '2875', '1679', 'c']

Ex Output:
2875O1079p52053377273Py6209kU


Ex Input:
2, 16, ['119', 'p', 'M', '8205', '7987', '1335', 'v', '8487', 'B', 'D', '3091', '9083', 'p', 'O', 'T', 'S', '2281', '7291', 'd', '4955', '5523', '1275', 't', '5103', 'q']

Ex Output:
STOp90833091DB8487v133579878205Mp


Ex Input:
17, 20, ['7581', '7161', 'L', '3111', '905', 's', 'X', '7591', '3511', '7285', 'M', 'U', 'E', 'X', '8101', '7781', '8177', '9261', 'R', 't', 'l', 'C', '9879', 'e', 'K', 'P']

Ex Output:

tR92618177