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: ['381', 'l', 'z', '323', 'x', '247', '11']

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


Question: ['101', '473', '25', 'i', '117']

Answer: 0, 1, 2, 3, 4, 5, 7


Question: ['17', '327']

Answer:
1, 2, 3, 7