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: ['181', 'n', 'p', '349', '321', '457', 'h', 's', 't', 'k', 'x', 'a', '145', '135', 'u']

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


Question: ['103', '355', '417', 'e', '359', 'c', 'w', 'q', '237', '93', '431', '59', 'l', '121']

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


Question: ['p', '147', 'f', 'e', '101', '69', 'h', 'x', '311', 'r', '343', 'u', '451', 'q', 'j']

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


