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:
['131', '483', 'k', '387', '451', 'j']
answer:
1, 3, 4, 5, 7, 8


question:
['o', '235', '479', 'e', '199', 'c', '25', '59', 'g', '415', '201', '129', 'a', 'i', 'c']
answer:
0, 1, 2, 3, 4, 5, 7, 9


question:
['279', 'm', '453', 's', 'x', 'g', 'i', 'x', 'd']
answer:

2, 3, 4, 5, 7, 9