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.
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Question: ['177', '17', '205', '25', 'n', '359', 'b', 'f', '181', 'k', '169', '483', '473', 'h']

Answer: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9


Question: ['85', '311', 'x', '97', 'b', '277', 's', 'a', 'v', 'o', 'a']

Answer: 1, 2, 3, 5, 7, 8, 9


Question: ['b', 'e', '385', '255', 'i', '101', '465', 'e', 'd', 'v', 'b', '165']

Answer:
0, 1, 2, 3, 4, 5, 6, 8


