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: ['425', 'x', 'u', 'f', 'v', '481', 'm', 'y', '159', '1']

Answer: 1, 2, 4, 5, 8, 9


Question: ['273', 'b', '461', '419', '349', '301', '365', 'k', '319', 'o']

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


Question: ['451', 'n', 'i', '427', '115', '453', '213', '441', 'q', '205', 'w', 'w', '121']

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