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: ['131', '483', 'k', '387', '451', 'j']

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


Question: ['411', 'n']

Answer: 1, 4


Question: ['h', '475', 'x', '53', '461', 'c']

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