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: ['u', '343', '167', 'a']

Answer: 1, 3, 4, 6, 7


Question: ['363', 'u', '179', 'e', '279', 'a', '151', '173', 'e', '61', '213']

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


Question: ['s', '161', '365', 'l', 'v', '497', 's', '301', '15', 'w', '203', '93']

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