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.
--------
Question: ['109', 't', '283', 'c', 'u', 'y', '251', 'x', '377', 'n', 's', 'd', 't', 'q', 'o']

Answer: 0, 1, 2, 3, 5, 7, 8, 9


Question: ['z', 'b', 'c', 'l', '453', 'h', '215', '447', '487', 'p', 'y', 'v']

Answer: 1, 2, 3, 4, 5, 7, 8


Question: ['71', '7', '341', '199', 'z', 'x', '201']

Answer:
0, 1, 2, 3, 4, 7, 9