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: ['299', '371', '313', '17', 't', 'q']

Answer: 1, 2, 3, 7, 9


Question: ['c', 'u', 'b', '347', '191']

Answer: 1, 3, 4, 7, 9


Question: ['45', 'v', 'c', 'y', '495', '483', '171']

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