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: 7, 9, ['4311', 'Q', 'j', '3613', '9671', 'u', 'y', '3321', '2069', '4299', 'W', 'c', '627', '1327', '9747', 'Q', 'k', '9587', '5911']
Example Output: 96021233y

Example Input: 6, 7, ['2289', '1015', 'T', 'e', '4499', 'J', 'B', '5107', 'x', '3103', 'Q', 'Z', 'H']
Example Output: BJ

Example Input: 2, 9, ['1633', '2373', '6423', '271', '6295', '8911', 'P', 'o', '9369', 'm']
Example Output:
9639oP1198592617232463732