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: ['e', '313', '259', 'i', 'h']

Answer: 1, 2, 3, 5, 9


Question: ['353', 'k', 'j', '1', '375', 'e', 'd']

Answer: 1, 3, 5, 7


Question: ['i', '121']

Answer:
1, 2