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.

['r', '321', '355', 'w', 'm', 'v', 'a', 'u', '455', 'n', '169']
1, 2, 3, 4, 5, 6, 9

['x', '91', 'q', '417', '385', '455', '393', 'm', 's', 'c', '91', '71', 'n']
1, 3, 4, 5, 7, 8, 9

['r', 'g']

-1