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: 3, 3, ['x', 'v', 'p', '4337', '635', '8927', 'B']
Example Output: p

Example Input: 6, 7, ['753', '4657', 'h', '13', '593', 'I', '7689', '717']
Example Output: 9867I

Example Input: 10, 16, ['2463', 'h', 'Z', '1733', 'O', '1681', 'n', 'z', 'M', '2789', 'm', '7693', '1853', '7025', 'b', '3139', '7287', '523', '9127', '8085']
Example Output:
9313b520735813967m9872