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: ['u', '73', 'x', 'f', 'e', '187', 'x', 'i', '215', '1', 'z', '129', '89', 'f', 'i']

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


Question: ['385', 'k', 'a', 't', 'o', 'b', 'g', 'u', '319', 'e', '315', '365']

Answer: 1, 3, 5, 6, 8, 9


Question: ['209', '429', '65', 'y', '233', '23', 's', 'w', 'c', 'a', '161', 'o', 'h']

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