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.

Q: ['247', 's', 'y', 'c', '421']

A: 1, 2, 4, 7
****
Q: ['h', 'e', 'v']

A: -1
****
Q: ['239', '133', 'a', '395', '315', '287', '97', 'p', 'b', '63', '383']

A:
1, 2, 3, 5, 6, 7, 8, 9
****
