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.

Input: Consider Input: 4, 7, ['H', 'I', 'B', '6833', 'a', '7477', '8817', 'd', '4545', '779', 'F', '3265', '1819', '9317', '879']

Output: 88177477a6833


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

Output: W29433725cf79496133


Input: Consider Input: 21, 22, ['2771', '7707', 't', 'u', '3709', '7121', 'D', 'G', 'h', 'w', 'q', 'h', 'z', 'P', 'j', '1119', 'n', 'U', 'N', 'A', 'j', 'd', 'k', 'e', 'l']


Output: dj