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: ['255', '19', '335', '483', 'r', 'c', 'r', 'o', '189', '71', '379', 'l', 'b']

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


Question: ['k', '409', '333', '283', 'm', '489', '377', '439', '443', 'r', '101', 'n', '35']

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


Question: ['11', 'k', '65', '453', '155', 't', 'b']

Answer:
1, 3, 4, 5, 6