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: ['261', '227', 'f', 'w', '141', 'k', '119', '407', '409', '373']

Answer: 0, 1, 2, 3, 4, 6, 7, 9


Question: ['j', '455']

Answer:
4, 5