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: ['459', 'd', '473', 'i', 'l', 's']

Answer: 3, 4, 5, 7, 9


Question: ['w', '203', 'd', '133', 'i', 'j', 'd', 'u', 'u', 's', 'f', 'f', '221', '341', '299']

Answer: 0, 1, 2, 3, 4, 9


Question: ['341', 'a', 'g', 'a', '147', 'z', '91', 'm']

Answer:
1, 3, 4, 7, 9