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: ['u', '73', 'x', 'f', 'e', '187', 'x', 'i', '215', '1', 'z', '129', '89', 'f', 'i']

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


Question: ['85', '101', 'j', 'g', 'o', 'f', 'w', 'o', 'm', '45', 'e', 'z']

Answer: 0, 1, 4, 5, 8


Question: ['113', '475', 'x', '127', 'l', '217', '279', '197', 'z', '85', '215', '287', 'p', 'z', 'j']

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