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: ['311', '147', 'a', '149', 'h']

A: 1, 3, 4, 7, 9
****
Q: ['j', 'd', '445', 'g', '263', '217', '357', 'c', '57', 'x']

A: 1, 2, 3, 4, 5, 6, 7
****
Q: ['487', '47']

A:
4, 7, 8
****