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: 14, 20, ['9977', 't', 'Y', 'i', '7981', 'a', '1711', '3371', '9143', '3665', '1525', 'y', 'b', '379', 'k', 'T', 'Q', 'D', 'c', '1001', '551', 'Z']
Example Output: 1001cDQTk973

Example Input: 1, 15, ['5997', '2005', '8529', 'j', 'T', '9729', 'T', 'm', '357', '779', '2253', '725', 'z', '4149', '2913', '8135', 'Q', 'B']
Example Output: 31929414z5273522977753mT9279Tj925850027995

Example Input: 15, 28, ['3339', 'n', 'y', 'h', 'X', 'S', 'g', '5037', 'S', '2315', '7015', 'b', 'c', 'x', 'Z', 'p', '5973', 'p', 'p', '7863', 'L', '3313', '5527', '8251', '8039', '6159', 'I', '2589', '3761']
Example Output:
9852I95169308152872553133L3687pp3795pZ