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:
1, 7, ['3145', '4447', 'h', '1723', '2791', '8085', 'H', 'R', '5457', 'F', 'P', 'N', 'u', 's']

Ex Output:
H808527911723h44473145


Ex Input:
6, 10, ['3799', '8635', '8411', 'Q', '4813', 'v', '9781', 'b', 'B', 'R', '5555', '2269', '7573', 'j', 'G', '6001', 'l', '209', '763', 'b', 'j', 'f', '9975', '2581']

Ex Output:
RBb9781v


Ex Input:
12, 23, ['M', '9209', '2559', '4271', '4543', '3773', 'D', '1905', 'P', 'A', 'r', '4641', '2693', '2445', 'Q', 'M', 'h', '6097', 'W', '3773', 'S', 'x', '5325', '5097', 'e', '6189', '5013', '2527', 'g']

Ex Output:

5325xS3773W6097hMQ244526934641