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: 1, 1, ['4865', 'y']
Example Output: 5684

Example Input: 6, 12, ['z', 'E', '6097', 'G', 'Z', 'X', '4155', 'r', 'n', 'i', '4915', 't', 'P', 'A']
Example Output: t5194inr5514X

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