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: ['437', '377']

A: 3, 4, 7
****
Q: ['343', 'g', 'v', '81', 'r', '49', '85', '497', 'l', 'o', '117', '145', '133', 'r']

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