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: ['311', '147', 'a', '149', 'h']

Answer: 1, 3, 4, 7, 9


Question: ['q', '17', '497', '69', 'n', '25', 'a', 'j', 'c', 'j', '303', '453', 'k', 'h']

Answer: 0, 1, 2, 3, 4, 5, 6, 7, 9


Question: ['z', 'w', '87', '99', '5', 'q', '449', 'b', '483', 'v', '467', 't', '433', '483']

Answer:
3, 4, 5, 6, 7, 8, 9