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: ['b', '351', 'g', 'k', '29', '15', '411', '97', 'r', '27', '279']

A: 1, 2, 3, 4, 5, 7, 9
****
Q: ['119', '189', 'k', 'e', '425', '21', '245']

A: 1, 2, 4, 5, 8, 9
****
Q: ['463', '477', 'j', 'p', 'f', '1', 'f', '381']

A:
1, 3, 4, 6, 7, 8
****