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:
['487', '355', 'm', 's', '367', 'n', '203', 'x', 't', 'v', 'd', '251']
answer:
0, 1, 2, 3, 4, 5, 6, 7, 8


question:
['375', '457', '423', 'q', 't']
answer:
2, 3, 4, 5, 7


question:
['155', '469', '205', '103', '289', 'h', 't', 't', 'h']
answer:

0, 1, 2, 3, 4, 5, 6, 8, 9