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: ['z', 'e', '75', '379', 'c', 'f', 'g', '381', 'l', 'u', '197', '489']

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


Question: ['h', 'i', 'e', '319', 'g', '187', '395', 'f', '327', 'y']

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


Question: ['127', 'd', '479', 'v', '213', 'm', 'z', '151', 'h', '455']

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