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:
['k', '373', 'b', '305', 'i', 'n', 'z', 'm', 'c']
answer:
0, 3, 5, 7


question:
['207', '151', '307', 'l', 'o', 'c', '249', '381', 'w', '323']
answer:

0, 1, 2, 3, 4, 5, 7, 8, 9