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: ['s', 't', 'c', '299', 'g', '33', 'o', '485', '345', '295', 'm', '345', 'q', '431', '151']

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


Question: ['o', 'f', 'm', 'w', 'w', 'y', 'b']

Answer: -1


Question: ['275', 'z']

Answer:
2, 5, 7