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.
15, 19, ['N', 's', '4925', '89', '2039', 'm', '311', 'k', '9717', '9437', '4339', 'N', '2149', 'P', 'p', '7815', 'L', '1199', 'p', 'k', 'u', '8071', '7827', '4531', 'D', 'P', '8855', '1343', 'D', 'S']