In this task, you are given an input list A. You need to extract and sort the unique digits used in the list in ascending order. Return -1 if there is no digit in the list.

['181', 'n', 'p', '349', '321', '457', 'h', 's', 't', 'k', 'x', 'a', '145', '135', 'u']
1, 2, 3, 4, 5, 7, 8, 9

['219', '127', '449', 'u', 'g']
1, 2, 4, 7, 9

['s', '321', 'c', '357', '83', '171', '437', 'u', 'f', '403', '271', 'e', '45', '337', 'n']

0, 1, 2, 3, 4, 5, 7, 8