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: ['167', '229', '439', '389', '483', '207']

A: 0, 1, 2, 3, 4, 6, 7, 8, 9
****
Q: ['a', 'n', '423', 'y', 'y', 'u', '55', 'y', '295', '73', 't', 'p']

A: 2, 3, 4, 5, 7, 9
****
Q: ['z', '283', 'o', '399', '489', 'u', '31', '225', 'h', 's', '421', '233']

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