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: ['f', 't', 'a', '163', '297', '97', '487', '341', '193']

Answer: 1, 2, 3, 4, 6, 7, 8, 9


Question: ['353', '195', '297', '175', 'u', 'p', 'r', 'l']

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


Question: ['p', '261', '221', 's', 'z', 'e', '453', '343', 'w', '423']

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