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: ['b', 'r', 'n', '89', '379', '283', '27', 's', '361', 'm', 'l']

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


Question: ['469', '13', '333', '271', '223', '341', 'h', '317', '303']

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


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

Answer:
-1