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: ['c', '31', '49', 'x', 'n', 'i', 'a', '135', '65', '401', 'b', '213', 'f', '321']

A: 0, 1, 2, 3, 4, 5, 6, 9
****
Q: ['255', 'u', 's', 'g', '445']

A: 2, 4, 5
****
Q: ['261', 'o', 'e', 'a', '35']

A:
1, 2, 3, 5, 6
****