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: ['217', 'c', 'h', 'e', 't', '331', '69']

Answer: 1, 2, 3, 6, 7, 9


Question: ['221', '191', 'w', 'l', 'h', 'a']

Answer: 1, 2, 9


Question: ['z', '425', '57', 't', '415', 's', 'n', 'x', 'v', '283', 'l', 'v', 'k', 's']

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