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: ['x', '493', 'x', '211', 'n', '143', '277', '191']

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


Question: ['345', 'h', '9']

Answer: 3, 4, 5, 9


Question: ['469', 'e', '167', '459', '153', 'b', '361', '127', 'r']

Answer:
1, 2, 3, 4, 5, 6, 7, 9