Definition: 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: 4, 28, ['8621', '7449', '9205', '3095', '6933', 'u', 'H', 'd', 'V', '8965', 'y', '795', 'c', 'X', 'A', '3629', 'a', 'u', 'q', 'b', '3015', '9577', '939', '3787', '8381', 'x', '661', '6987', '4807']

6987661x8381378793995773015bqua3629AXc795y8965VdHu69333095