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: ['c', '317', 'z', 'z', 'h', '227', '439', 'x', 'f']

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


Question: ['l', '269', 'l', '379', '359']

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


Question: ['119', '317', 'r', '469', 'e', 'l', '303', 'c', 's', 'i', 'i']

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