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: ['371', '459', '9', 'j', '425', 'k', '495', 'x', '105', '49', 'j', '101', 's']

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


Question: ['i', 'f', '409', 'c', '83']

Answer: 0, 3, 4, 8, 9


Question: ['p', '227', '345', '219', 'x', 'u', '13', '297', '347', '225', '449', '249', 'r', 'i']

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