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, 9, ['9889', 'H', 'e', 'R', 'd', '8771', 'M', '5589', 'V', 'm', '8625', '6173', '8077', '1147', '1515', '8759', '5103']
Example Output: V9855M1778dReH

Example Input: 7, 27, ['9785', 'O', '1451', '263', 'V', '9045', 'n', 'K', 'B', '8131', '6137', '437', 'v', 'd', '2787', '3483', '3141', '2151', 'r', 'q', '2981', '4301', '1947', '7631', '8755', 'F', 'W', 'L', 'O']
Example Output: WF55781367749110341892qr1512141338437872dv73473161318BKn

Example Input: 12, 17, ['y', '6967', 'O', 'b', 'n', 'V', 'J', 'S', 'p', '7825', '2715', '7137', 'E', '7859', '9147', 'w', '1207', 'Y', '6729']
Example Output:
7021w74199587E7317