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: ['c', 'h', '151', 'g', 'd', 'd', 'k', '37']

A: 1, 3, 5, 7
****
Q: ['k', 'a', '437', '461', 'b', '341', '175']

A: 1, 3, 4, 5, 6, 7
****
Q: ['309', 'q', 'z', '75', '101']

A:
0, 1, 3, 5, 7, 9
****