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:
['g', '411', '307', 'i', '483', 'z', '29', 't', 'f', 'z']
answer:
0, 1, 2, 3, 4, 7, 8, 9


question:
['299', '371', '313', '17', 't', 'q']
answer:
1, 2, 3, 7, 9


question:
['n', 'a', '203', '493', 'u', 'l', '125', '175', 'y', '207', 'g', 'd', 'x', 'x', 'x']
answer:

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