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, 7, ['J', '701', 'm', '8837', 'b', 'd', '5911', 'y', '8031']
Example Output: 1195d

Example Input: 4, 9, ['6451', '9261', 's', '5587', 'D', '7595', 'D', 'E', 's', '8841', 'Y']
Example Output: sED5957D7855

Example Input: 4, 19, ['9869', 'M', '6439', '9799', '7941', '3797', '541', 'I', '943', '7835', 'i', 'O', 'Y', 'V', 'n', 'v', 'C', '1735', 'r', 'i', '8733', '3887', '6589']
Example Output:
r5371CvnVYOi5387349I145797314979979

