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: ['k', 'b', 'k', 'l', '441', 'b', '115', 'd', 'b', 'r', '115', 'k', 'a']

A: 1, 4, 5
****
Q: ['x', 'a', '381', 'k', 'n', 'm', '267', 'r', '193', 'f', 'h', 'r', '327', 'i', 'h']

A: 1, 2, 3, 6, 7, 8, 9
****
Q: ['311', 'v', 'x', 'y', '401', 'i']

A:
0, 1, 3, 4
****