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: ['205', '347', '423', 'm', '363', 'u', 'g']

Answer: 0, 2, 3, 4, 5, 6, 7


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

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


Question: ['93', 't', '85', 'f', '311', '393', 'q', 'i', '117', '191', '289', '57', 'a', '287']

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