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: ['487', 'x']

Answer: 4, 7, 8


Question: ['f', 'f', '149', '311', '331', 'l', 'u', '349', 'v', 'v', '417', '285']

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


Question: ['309', '311', '411']

Answer:
0, 1, 3, 4, 9