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: ['473', '357', 'i', 'j', '299', 's', '495', '165', 'o', 'l', 'x', 'v', '1', 'o', '469']

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


Question: ['c', '465', '147', 's', '113', 'd', 'c', '355']

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


Question: ['w', 'v', 'y', '361', 'v', '209', '279', '477', '163', 'x', 'n', 'k', '481']

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