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: ['487', 'x']

Answer: 4, 7, 8


Question: ['k', '413', '321', '209', 'k', '263']

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


Question: ['q', 'b', '269', '97', '225']

Answer:
2, 5, 6, 7, 9