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: ['h', 'i', 'e', '319', 'g', '187', '395', 'f', '327', 'y']

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


Question: ['s', '45']

Answer: 4, 5


Question: ['x', '389', '459', '231', 'l', '17', '121', 'd', '481']

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