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: ['p', '45', 'z', '85', 'k', 'e', '191', '265', '261', 'w', 'l', '263', 'w']

A: 1, 2, 3, 4, 5, 6, 8, 9
****
Q: ['85', '53', '43', 'j', 'e', '443', '231', 'z', 'f', 'v', '235', '377']

A: 1, 2, 3, 4, 5, 7, 8
****
Q: ['i', '271', 'i', '177', '237', 'm', 'x']

A:
1, 2, 3, 7
****