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: ['n', '149', 'z', '37']

A: 1, 3, 4, 7, 9
****
Q: ['s', '45']

A: 4, 5
****
Q: ['z', '283', 'c', 't', 'u', '477', '373', 'k', '365', '269', 'j', 'p', 'v', '231']

A:
1, 2, 3, 4, 5, 6, 7, 8, 9
****