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: ['d', '71', '65', '177', 'k']

A: 1, 5, 6, 7
****
Q: ['m', '107']

A: 0, 1, 7
****
Q: ['v', 'd', 'b', '177', '23', '227', '475', '371', 'r', '235']

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