In this task, you are given inputs 'i', 'j', and A, where 'i' and 'j' are integers and A is a list. A list is shown by two brackets and comma-separated numbers and characters inside, like ['1', '12', 'l']. You need to concatenate all elements of A from the ith element to the jth element, and then reverse the resulting 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 reverse first and then concatenate.

Example Input: 3, 7, ['u', '1307', 'F', '8027', 'r', '4559', 'F', 'm', '9805', '5063']
Example Output: F9554r7208F

Example Input: 22, 26, ['V', 'O', '511', 'c', '4015', 'P', 'R', 'L', '115', 'L', '6809', 'S', '2397', 'X', 'e', 'Y', 'I', 'O', '8125', 'u', 'r', '9403', 'Q', 'i', '5835', 'U', 'm']
Example Output: U5385iQ3049

Example Input: 5, 21, ['E', 'A', '7669', '5393', '4043', 'o', '2489', 'l', '7953', 'R', 'e', 'l', 'b', 'G', '8823', '3001', 'x', 'q', 'C', '3773', 'l', 'E', 'i', '2725', 'F', 'O', '9657', 'j']
Example Output:
l3773Cqx10033288GbleR3597l9842o3404