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: ['223', '55', 'l', '461']

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


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

Answer: 3, 4, 5, 9


Question: ['s', '371', '391', '469', '133', '469', '167', 's', 'u', '101', 'n']

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