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: ['201', 'm', '157', 's', 'n', 'i', '325', 'x', '247', 'u', '187', 'e', '199']

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


Question: ['359', '233', '455', '449', 'h']

Answer: 2, 3, 4, 5, 9


Question: ['91', 'e', 'h', 'x', 'g']

Answer:
1, 9