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: ['u', 'm', 's', '101', '427', 'h', 'i', '463', 'j', '77', '465', 'r']

Answer: 0, 1, 2, 3, 4, 5, 6, 7


Question: ['23', 'p', '409', '305', 'z', 'q', '295', '391']

Answer: 0, 1, 2, 3, 4, 5, 9


Question: ['227', '461', '313', 'o', '383', '117']

Answer:
1, 2, 3, 4, 6, 7, 8