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: ['449', '427', 'g', '397', '439', 'f', 'b', 'z', 't', 'f', 's', '379', 'o']

Answer: 2, 3, 4, 7, 9


Question: ['299', '95', 'd', '423', 'q', 'u', '167', '209', '477', 'h', 'k', 'a', '213']

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


Question: ['v', '463', '51', '383', 'm', '411', '221', 'r']

Answer:
1, 2, 3, 4, 5, 6, 8