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: ['381', '277', 'g', '307', 'p', '105', '341', 'o', '313', '5', '375', '145', 'k']

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


Question: ['85', '101', 'j', 'g', 'o', 'f', 'w', 'o', 'm', '45', 'e', 'z']

Answer: 0, 1, 4, 5, 8


Question: ['w', 't', '53', 'b', '473']

Answer:
3, 4, 5, 7