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: ['h', 't', 'h', 'i', 'c', '441', '117', '463', 'r']

Answer: 1, 3, 4, 6, 7


Question: ['y', 'l', 'g', 'w', '13', 'd', '123', '279', '293', 'n', '341', 'n', '359', '35', 'd']

Answer: 1, 2, 3, 4, 5, 7, 9


Question: ['193', '181', '59', '357', '419', 'h', 'y', '481', 'm']

Answer:
1, 3, 4, 5, 7, 8, 9