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: ['185', '425']

Answer: 1, 2, 4, 5, 8


Question: ['469', '13', '333', '271', '223', '341', 'h', '317', '303']

Answer: 0, 1, 2, 3, 4, 6, 7, 9


Question: ['435', '311', '237', '299', '185', '201', 'd', 'm', 'l', 'j', '281', '171', 'f', 'm', 'c']

Answer:
0, 1, 2, 3, 4, 5, 7, 8, 9