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: ['9', '129', '467', '59', 'm', 'n', 'd', '107']

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


Question: ['431', '245', '23', 'c', '185', 'k', '155', '163', 'e', '35', 'r', '175', '163']

Answer: 1, 2, 3, 4, 5, 6, 7, 8


Question: ['i', '279', '441', '211', 'j', '329', 'm', 'u', '267', 'q']

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