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: ['z', '273', '447', 'h']

Answer: 2, 3, 4, 7


Question: ['49', '417', 'y', 'c', 'r', '349', 'v', '433', '433', 't']

Answer:
1, 3, 4, 7, 9