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: ['o', 'e', '187', '153', 'a', '253', 'f']

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


Question: ['229', 'x', '49', 'p', '73', '77', '337', '497']

Answer: 2, 3, 4, 7, 9


Question: ['m', '63', '113', '141', '45', 't', '433', 'k', '99', 'k']

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