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: ['219', 'v', '295', '291', 'n', 'a', '133', 'a', 'y', 'i', 'e', '235', '461']

Answer: 1, 2, 3, 4, 5, 6, 9


Question: ['v', 'r', '67', '49']

Answer: 4, 6, 7, 9


Question: ['437', 'w', '393', '499', '49', 'h']

Answer:
3, 4, 7, 9