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, 5, ['4733', 'G', '9275', '7757', 'I', 'v', 'z', 'p', 'Z']
Example Output: I

Example Input: 11, 18, ['7155', 'W', '8393', 'q', 'E', 'S', 'B', '949', '4761', '8663', 'V', 'V', '5047', '4111', '3235', 'I', '1289', 'P', 'O', 'w', '8307', '6725', 'h', '735', 'j', 'x', '1061']
Example Output: P9821I532311147405VV

Example Input: 20, 22, ['J', '4451', '8487', 'I', 't', 'Q', '6235', '1535', '885', '925', '3559', '3097', 'a', 'j', '4071', '2897', 'n', '881', '8419', '3047', 'u', '6287']
Example Output:
7826u7403