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: ['t', '197', '129', 'u', 'l', 'y', '485', '57', '147', 'p', '137', 'v', '221']

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


Question: ['219', 'v', '295', '291', 'n', 'a', '133', 'a', 'y', 'i', 'e', '235', '461']

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


Question: ['399', '47', '225', '143', 'p', '441', '111', 'u', 'j', '421']

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