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: ['v', '105', 'p', 'w', '295', '239', '453']

A: 0, 1, 2, 3, 4, 5, 9
****
Q: ['z', '375', 'v', 'o', 'v', '31', 'u', 'x', 'q', 'x', '71', 'n', 'v']

A: 1, 3, 5, 7
****
Q: ['305', 'o', '85', 'a', '67', 'v', 'x', 't', '147', '233', 'b', 'e', '457', 'j']

A:
0, 1, 2, 3, 4, 5, 6, 7, 8
****