Detailed Instructions: 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.
See one example below:
Problem: ['q', '31', 'a', 'd', '53', '85', 'p', '77']
Solution: 1, 3, 5, 7, 8
Explanation: Here, the numbers in the list are '31', '53', '85' and '77', and the unique digits used in the list are '1, 3, 5, 7, 8' in ascending order.

Problem: ['217', 'c', 'h', 'e', 't', '331', '69']
Solution:
1, 2, 3, 6, 7, 9