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.

4, 7, ['3421', '6129', '593', '203', '2731', '1393', '9739', '1087', '3453', '1389', 'W', 'D', 'b', '9261']
937939311372302

3, 4, ['2419', '643', '8177', '7291', '561', '6529', '4101', 'u', '6445']
19277718

17, 22, ['5821', '3395', '2095', 'W', '2089', '2289', 'V', 'd', '4429', '3543', '5833', '517', 'h', '1547', 'r', 'h', '5087', 'V', 'n', 'b', 'S', '2209', 'W', 'R', 'm', '7913', 'x', '115', 'u', 'K']

9022SbnV7805