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: ['t', 'u', 'e', 'a', '369', 'e', 'r', 'm']

Answer: 3, 6, 9


Question: ['l', '201', 's', 'y', 'b', '395', '19']

Answer: 0, 1, 2, 3, 5, 9


Question: ['313', '499', 'q', 'q', '231', 't', '23', '241']

Answer:
1, 2, 3, 4, 9