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: ['255', '19', '335', '483', 'r', 'c', 'r', 'o', '189', '71', '379', 'l', 'b']

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


Question: ['479', 's', 'g']

Answer: 4, 7, 9


Question: ['27', 'j', 'y', 'x', 'd', '151']

Answer:
1, 2, 5, 7