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: ['d', '335', '23', '461', '497', 'p', '313']

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


Question: ['223', '71']

Answer: 1, 2, 3, 7


Question: ['g', 'k', 'c', 's', 'y', '159', 'g', '393', '195', '415', 'l', '321', 'u', '359', '377']

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