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: ['159', 'y', '369', 'r', '341', '23', 's', '209', 'l', 's', '473']

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


Question: ['223', '55', 'l', '461']

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


Question: ['429', '61', 'p', '223', '73', '221']

Answer:
1, 2, 3, 4, 6, 7, 9