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: ['109', 't', '283', 'c', 'u', 'y', '251', 'x', '377', 'n', 's', 'd', 't', 'q', 'o']

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


Question: ['143', 'i', '499', 't', '27']

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


Question: ['x', '273', '365', '497', '21', 'p']

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