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: 5, 6, ['q', 'L', 'f', '391', '7601', '2925', 'i', 'C', '4787']
Example Output: 52921067

Example Input: 1, 6, ['H', '103', '7091', 'V', 'T', 'F']
Example Output: FTV1907301H

Example Input: 5, 7, ['F', '3781', '4385', '4683', 'F', 'd', '6043', 'J', '7787', 'f']
Example Output:
3406dF