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: ['279', 'y', '391', '33', '281', '113', 'd', 'v']

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


Question: ['z', 'e', '75', '379', 'c', 'f', 'g', '381', 'l', 'u', '197', '489']

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


Question: ['35', '373', 'g', 'q', 'j', 'n']

Answer:
3, 5, 7