instruction:
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:
['l', 'm', 'h', '87', '265', 'e', '415', '325', 'p', 'b', '385']
answer:
1, 2, 3, 4, 5, 6, 7, 8


question:
['v', 'i', 'g', 'h']
answer:
-1


question:
['c', '121', 'c', '479', 'q']
answer:

1, 2, 4, 7, 9


