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:
['87', '139', 'y', '129', '255', '227', '103', 'j']
answer:
0, 1, 2, 3, 5, 7, 8, 9


question:
['x', '91', 'q', '417', '385', '455', '393', 'm', 's', 'c', '91', '71', 'n']
answer:
1, 3, 4, 5, 7, 8, 9


question:
['115', '285', '321', 'h', '265', 'w', '205', '171', 'f', '29']
answer:

0, 1, 2, 3, 5, 6, 7, 8, 9