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:
['377', 'z', '421', '137', 't', 'v', 's', 'l']
answer:
1, 2, 3, 4, 7


question:
['473', '449', '357', 'p', 'p', 'e', '377', '77']
answer:
3, 4, 5, 7, 9


question:
['47', '121', 'a', 'a', '395', 'i', 'v', '101', 'w', 's']
answer:

0, 1, 2, 3, 4, 5, 7, 9