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: ['73', '199', '189', '27', 'm', '101', '61', '113', 'y', '169']

Answer: 0, 1, 2, 3, 6, 7, 8, 9


Question: ['379', '485', '415', '37', '221', '125', '245', '87', 'a']

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


Question: ['499', '467', 'i', '37', 'w', 'r', 's', '119', '21', '375', 't', '43', '125', 'd', 'i']

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