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: ['159', 's', 'z', '85', 't', 'g']

Answer: 1, 5, 8, 9


Question: ['g', 't', '31', 't', 's']

Answer: 1, 3


Question: ['159', '131', '59', 'g', '5', '221', 'l', '355', '151', '151', '235', '481']

Answer:
1, 2, 3, 4, 5, 8, 9