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:
['437', 'e', 'b', 'f', '203', 't', '5', '461', 'e', '367', '391', '81']
answer:
0, 1, 2, 3, 4, 5, 6, 7, 8, 9


question:
['j', 'd', '445', 'g', '263', '217', '357', 'c', '57', 'x']
answer:
1, 2, 3, 4, 5, 6, 7


question:
['219', '419', '265', 'h', '225', '475', 'x', 'e', 'i', '433']
answer:

1, 2, 3, 4, 5, 6, 7, 9