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: ['v', 'q', '139', '79', '149', '469', 'g', '239', '221', 'v', '77']

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


Question: ['j', '195', 'u', '55']

Answer: 1, 5, 9


Question: ['e', 'z', '353', 's', '223', 'j', 'q', '345', 'v', '71']

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