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.
--------
Question: ['a', 'n', '423', 'y', 'y', 'u', '55', 'y', '295', '73', 't', 'p']

Answer: 2, 3, 4, 5, 7, 9


Question: ['85', '311', 'x', '97', 'b', '277', 's', 'a', 'v', 'o', 'a']

Answer: 1, 2, 3, 5, 7, 8, 9


Question: ['m', 'n', 'e']

Answer:
-1