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: ['359', '233', '455', '449', 'h']

Answer: 2, 3, 4, 5, 9


Question: ['233', '189', '217', 's', '221', 'v', 'c', 'x', '455']

Answer: 1, 2, 3, 4, 5, 7, 8, 9


Question: ['n', 't', '423', '5', '21', '305']

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