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: ['61', '255', 'u', '219', '197', 'i', '453', 'i', '267', '217', 'o', 'g']

A: 1, 2, 3, 4, 5, 6, 7, 9
****
Q: ['b', '351', 'g', 'k', '29', '15', '411', '97', 'r', '27', '279']

A: 1, 2, 3, 4, 5, 7, 9
****
Q: ['293', '71', 'e', '297', '9', '121', 'c', '453', '479', 'o', '121', '449', '485']

A:
1, 2, 3, 4, 5, 7, 8, 9
****