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: ['353', '195', '297', '175', 'u', 'p', 'r', 'l']

A: 1, 2, 3, 5, 7, 9
****
Q: ['l', 'm', 'h', '87', '265', 'e', '415', '325', 'p', 'b', '385']

A: 1, 2, 3, 4, 5, 6, 7, 8
****
Q: ['s', '375', '371']

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