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: ['405', 'x', '163', 'z', 'z', '261', 'o']

Answer: 0, 1, 2, 3, 4, 5, 6


Question: ['203', 'p', 'r', 'r', 'c', 'w', 'z', 'w', 'a', '203', 'n']

Answer: 0, 2, 3


Question: ['425', '29', 'i', '255', '201', 'r', '29', '191', '441', '239', 'o']

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