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: ['h', 't', 'h', 'i', 'c', '441', '117', '463', 'r']

Answer: 1, 3, 4, 6, 7


Question: ['g', '109', 'm', '169', '443', 'm', '57', '285', 'x', '171', '367']

Answer: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9


Question: ['e', '325', '377', 'v', '35', 'n', '125', '195']

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