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: ['i', '485', '109', 'e', '15', '461', 'r', 'l', '223', '327']

Answer: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9


Question: ['v', 't', '81', '223', 'b', 'b', '313', '151', '63']

Answer: 1, 2, 3, 5, 6, 8


Question: ['u', '411', '427', '3', 'p', '279', 'l', 'b', 'r', 'n', 'e', '235', '87', 'c']

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