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: ['445', '91', '141', '185', 'b', 'k', 'f', 'l', 'i', '229', 't', 'v']

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


Question: ['c', '155', '61']

Answer: 1, 5, 6


Question: ['495', 'x', 'v', '233', '267', '197', 'e', 'o']

Answer:
1, 2, 3, 4, 5, 6, 7, 9