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: ['201', 'm', '157', 's', 'n', 'i', '325', 'x', '247', 'u', '187', 'e', '199']

A: 0, 1, 2, 3, 4, 5, 7, 8, 9
****
Q: ['r', '273', 'h', '421', 'k', 'r', 'k', 't', 'x', 's', 'j']

A: 1, 2, 3, 4, 7
****
Q: ['l', '413', '81', 'o', 'p', '441', 'e', '351', 'o', '197', 'x', '47', '231', 'k', '489']

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