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:
4, 10, ['5537', 'w', '29', '6133', '7949', 'f', 'c', '3725', '2943', 'W', 'U', '1905', 'l', 'Z', 'r']

Ex Output:
W29433725cf79496133


Ex Input:
1, 12, ['H', '7185', 'R', 'N', '489', '6499', 'L', '8809', '7041', '9267', 'o', 'r', '1423', '6103']

Ex Output:
ro926770418809L6499489NR7185H


Ex Input:
2, 4, ['c', '6701', '3897', 'p', 'r', 'X', 'g', '4631', '3273', '4631', '1449', 'C', '7629', 'K']

Ex Output:

p38976701