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: ['f', 'f', '149', '311', '331', 'l', 'u', '349', 'v', 'v', '417', '285']

Answer: 1, 2, 3, 4, 5, 7, 8, 9


Question: ['43', 'n', 's', '453', 'c', '205']

Answer: 0, 2, 3, 4, 5


Question: ['k', '487', '479', 'a', '391', 'o', '261', '107', '33', '133', 'n', '229', '333', '33', 'y']

Answer:
0, 1, 2, 3, 4, 6, 7, 8, 9