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: ['449', '427', 'g', '397', '439', 'f', 'b', 'z', 't', 'f', 's', '379', 'o']

Answer: 2, 3, 4, 7, 9


Question: ['u', 'h', 'z', '227', '497', '381', '101', '453', '5']

Answer: 0, 1, 2, 3, 4, 5, 7, 8, 9


Question: ['475', 'o', '367', 'x', 's', '135', '413', '143', 'f', 'y', '149', 'z', '283', 'x', 'y']

Answer:
1, 2, 3, 4, 5, 6, 7, 8, 9