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: ['379', 'w', 'b', '385', '429', '3', '297', '297', 't', 'z', 'i', '207', 'e', 'a']

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


Question: ['q', '403', '293', '245', '303', '145', 'u', '385', 'c', 'p', 'r', 'y', '53']

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


Question: ['s', 'l', '421', 'b', '53', 'r', 's', 'e', '227', '105', '123', 'u', 'm', 'w', 'q']

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