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, 13, ['l', '8917', '3729', 'm', '1925', '6557', 'p', 'U', 'd', 'R', '6095', '8129', '1417', '6421', 'n', 'f', '285', '9831', '1549', 'R', 's']