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: ['223', '55', 'l', '461']

Answer: 1, 2, 3, 4, 5, 6


Question: ['o', 'f', 'x', '239']

Answer: 2, 3, 9


Question: ['223', 'z', '451', '405', 't', 'w']

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