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: ['m', 'c', '139', '433', '29', 'z', '45', 't', 'a', 'n', '297', '45', '281']

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


Question: ['j', '131', 'e', 'c', '149', '325', 'h', 'l', 'i', 'q', '151']

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


Question: ['61', '75']

Answer:
1, 5, 6, 7