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: ['s', 'd']

Answer: -1


Question: ['z', 'e', 'c']

Answer: -1


Question: ['111', '227', '173', 'n', '205', 'y', '65', 'w', '167', 'o', 'x']

Answer:
0, 1, 2, 3, 5, 6, 7