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: ['d', '395', 'd', '233', '271']

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


Question: ['185', '425']

Answer: 1, 2, 4, 5, 8


Question: ['463', '313', '115', '449', '45', '253', 'g', '345', 'r', 'w', '439']

Answer:
1, 2, 3, 4, 5, 6, 9