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: ['o', 'k', 'i']

Answer: -1


Question: ['a', '399', 's', 'e', '495', 'd', 'f', 'a', '323']

Answer: 2, 3, 4, 5, 9


Question: ['p', '87', '141', 'd', '235', 'y', 'u', '435']

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