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.

Example Input: 5, 6, ['O', '3491', '2665', '3429', 'u', 'C', 'R', 'B', '1111', 'b', 'T', 'Z', '6831', 'V', 'C', 'b', '4451', 'R', 'r']
Example Output: Cu

Example Input: 19, 28, ['1857', '7871', 'N', 'j', 'f', 'y', 'F', 'M', '883', 'v', '7135', 'd', 'y', 'Z', 'K', '9301', 'm', '1725', 't', '1675', '6241', 'H', '5189', 'f', '2581', 'u', '465', '3677']
Example Output: 3677465u2581f5189H62411675t

Example Input: 7, 15, ['S', 'd', 'Y', 'D', '809', 'C', '279', '9719', 'B', '8493', 'q', '7469', 'C', '1591', '8649', '3719', '6719', 'e', 'p', 'O', 'I', '7223', 'I']
Example Output:
86491591C7469q8493B9719279