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: ['e', 'o', 'c', 'j', 'g', '249', 's', 'b', 'f', '359', '107', 'i']

Answer: 0, 1, 2, 3, 4, 5, 7, 9


Question: ['175', 'q', 'h', 'z', 'v', 'y', '39', '419', '87', '425', 'z', '375']

Answer: 1, 2, 3, 4, 5, 7, 8, 9


Question: ['49', '423', 'z', '195', 'a', '451', 'g', 'q', '45', 'c', 'p', '315', '395', 'x']

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