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: ['z', 'e', '75', '379', 'c', 'f', 'g', '381', 'l', 'u', '197', '489']

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


Question: ['41', 'o', 'm', 'h', 's', 't', '407', '445', '371', '93', '291', '457', 'r', '391', 'a']

Answer: 0, 1, 2, 3, 4, 5, 7, 9


Question: ['331', '241', 'w', 'r', '111', '175', 'v']

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