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:
['291', '445', 'q', 't']
answer:
1, 2, 4, 5, 9


question:
['353', 'y', 'a', 'g', '141', '97', '457', '297', '25', 'g', '131', 'u', '303', '39', 'p']
answer:
0, 1, 2, 3, 4, 5, 7, 9


question:
['415', 'r', 'k', '247', '341']
answer:

1, 2, 3, 4, 5, 7