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: ['z', 't', 'm', '295', '459', 'r', 'k', '149', '263', '5', '57', '455']

Answer: 1, 2, 3, 4, 5, 6, 7, 9


Question: ['151', 'j', 'o', 's', 'q', 'r', '325']

Answer: 1, 2, 3, 5


Question: ['453', 'm', '347', '155', 'q', '41', 'q', '355', 'u']

Answer:
1, 3, 4, 5, 7