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: 1, 4, ['2639', '497', '2353', '5375', '1053', '6001']
Example Output: 537523534972639

Example Input: 5, 6, ['p', '3693', 'm', '571', 'M', 'g', 'q']
Example Output: gM

Example Input: 2, 3, ['I', '301', '981']
Example Output:
981301