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: ['415', '365', '373', 't', 'n']

A: 1, 3, 4, 5, 6, 7
****
Q: ['91', '291', '379', 'k', 'a', 't', 'i', '355', 'l', '335', '119', '343']

A: 1, 2, 3, 4, 5, 7, 9
****
Q: ['43', 'f', 'w', '167', 'l', '171', 'd', '155', '421']

A:
1, 2, 3, 4, 5, 6, 7
****