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: ['n', '149', 'z', '37']

Answer: 1, 3, 4, 7, 9


Question: ['43', '479', '317', 'w', '475', '255', '3', 'x']

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


Question: ['j', 's', 'q']

Answer:
-1