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: ['l', 'g', 'o', 'x', '27', 'r', '123', '395', 'p', '27', '213', '455', 'y', '97']

A: 1, 2, 3, 4, 5, 7, 9
****
Q: ['k', '217']

A: 1, 2, 7
****
Q: ['k', 'u']

A:
-1
****