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, 6, ['u', 'O', 'l', '9119', 'P', '6983', 'H', '6701']
Example Output: 3896P

Example Input: 3, 3, ['5819', '3317', '451', '5811']
Example Output: 154

Example Input: 6, 7, ['8075', 'e', '6627', '9039', '6375', 'y', 'F', 'N', 'x', 'y', '8447', '53', 'I', 'N', '9491', 'v', '9449', '1215', '9143', '2725', '4585', 'T', '2957', '8291', 'B', '2789']
Example Output:
Fy