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: ['311', '147', 'a', '149', 'h']

Answer: 1, 3, 4, 7, 9


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

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


Question: ['d', '435', 'c', '67', 'p', 's', 'b', 'l', '79', 'f', '155']

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