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: ['t', 'v', '469', 'n']

A: 4, 6, 9
****
Q: ['h', 't', 'h', 'i', 'c', '441', '117', '463', 'r']

A: 1, 3, 4, 6, 7
****
Q: ['k', 'w', '227', '1', '457', '107', 'j', 'b', 't', 'b', '203']

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