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: ['101', 'o', 'j', 'q', '283', '229', '271', 'r', 'n', '481', '101', '477', 'w']

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


Question: ['215', '391', '251', '177']

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


Question: ['y', '83', '439', 'z', '3', '449']

Answer:
3, 4, 8, 9