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: ['219', '127', '449', 'u', 'g']

Answer: 1, 2, 4, 7, 9


Question: ['d', '423', '155', '271', '179', '1', 'd', 'j', '351', 's', 'j', '111', '47', 'c', 'l']

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