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: ['229', '369', 'c', '7', 'f', 'h', '455', 't', '249', 's']

A: 2, 3, 4, 5, 6, 7, 9
****
Q: ['357', '269', '105', '315', 'c', '301', 'v', '441', '415', 't', 'a', 'o', 'u', '23', 'n']

A: 0, 1, 2, 3, 4, 5, 6, 7, 9
****
Q: ['277', '363', '427', 'o', '355', '103', 'r', 'f', 'y', '107', 'x']

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