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: ['269', 'a', 'x', '395', '477', 'e', 'd', 'o', '129', 'j', '93', '237', '417', 'f']

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


Question: ['357', 'c', 'f', '3', 'q', 'w', 'm', 'l', '137', 'k']

Answer: 1, 3, 5, 7


Question: ['i', 'q', '21', 'i']

Answer:
1, 2