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', 'v', 't', 'm', '51', 'e', 'l', 'l', '83', '301', '21', '347', 'm', '41', 'b']

Answer: 0, 1, 2, 3, 4, 5, 7, 8


Question: ['v', '351', 's', 'f', 'd', '137', '11', '355', '345', 'm', 's', '165', '97', '225']

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


Question: ['403', 'n', 'e', '255']

Answer:
0, 2, 3, 4, 5