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.

1, 15, ['3571', 'D', '1249', 'g', '2843', '8589', 'R', '1161', '5653', '1821', 'w', 'b', 'i', 'c', '8247', '1397']
7428cibw128135651611R98583482g9421D1753

4, 5, ['8055', '701', 'J', '7719', 'w', '1403', 'p', '7939', 'N', '7599', 'B', '5797', 'v', 'x', 'B', '5093', '2315', 'f', 's', '6103', '1891', '329', 'p', 'U', '4761', '815', '735']
w9177

1, 3, ['4243', '1965', '1205', 'H']

502156913424