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: ['g', '169', '93', 'z', 'h', '493', 'r']

A: 1, 3, 4, 6, 9
****
Q: ['159', '3', 'f', 'k', 'o', 'm']

A: 1, 3, 5, 9
****
Q: ['b', '351', 'g', 'k', '29', '15', '411', '97', 'r', '27', '279']

A:
1, 2, 3, 4, 5, 7, 9
****