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: 2, 2, ['a', 'J']
Example Output: J

Example Input: 2, 16, ['6623', 'E', 'S', '8679', '7465', '2769', 'G', '9635', 'Z', 'Y', '6593', '9535', '5247', '2185', '7071', 'P', '7897', 'm']
Example Output: P17075812742553593956YZ5369G967256479768SE

Example Input: 14, 16, ['k', 'l', 'L', 'G', '1265', 'F', 'z', 'D', 'q', '9425', 'H', '9937', '3893', '2451', 'N', '547', 'H', 'B', '2561']
Example Output:
745N1542