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: ['455', '447', 'x', '479', 'b', '267', '339', '29', '267']

A: 2, 3, 4, 5, 6, 7, 9
****
Q: ['99', 'p', 'v', '49', 's', '279', 'v', '287', '355', 'o', '131', 'd', 'b']

A: 1, 2, 3, 4, 5, 7, 8, 9
****
Q: ['q', 'p', 'u', '447', '485', '419', 'c', 'k', 'i']

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