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: 6, 8, ['4263', '4799', 'D', '4627', 'P', 'z', '8589', '5107', 'T', 'R', 'L', 'G', 'd']
Example Output: 70159858z

Example Input: 3, 6, ['6843', '7805', 'h', '9097', 'O', 'u']
Example Output: uO7909h

Example Input: 5, 12, ['5623', 'X', 'o', 'h', '2773', '2099', 'B', '3421', 'U', '1705', '1971', 'l', 'x', '6871', 'j', '8065']
Example Output:
l17915071U1243B99023772