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: ['3', '181', 'o', '425', 'f', '391']

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


Question: ['s', '291', '257', 'w', '497', '309']

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


Question: ['t', 'j', 'b']

Answer:
-1