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: ['129', '373', '461', 'h', 'r', '163', '361', '483', '463', 'e', 'z', 'l']

Answer: 1, 2, 3, 4, 6, 7, 8, 9


Question: ['239', 's', 'h', 'w', '131', 'i', 'x']

Answer: 1, 2, 3, 9


Question: ['169', 'y', 'i']

Answer:
1, 6, 9