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: ['o', 'e', '187', '153', 'a', '253', 'f']

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


Question: ['479', '205', 'e', 'c', '57', 'm', 'i', '33', 'f', '45', 'z']

Answer: 0, 2, 3, 4, 5, 7, 9


Question: ['i', 'l']

Answer:
-1