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', '375', 'v', 'o', 'v', '31', 'u', 'x', 'q', 'x', '71', 'n', 'v']

Answer: 1, 3, 5, 7


Question: ['285', 'h', '231', 'l', 'd', 'k', '309', '345', 'k', 'p', '351', '93', 'b', 'w']

Answer: 0, 1, 2, 3, 4, 5, 8, 9


Question: ['5', '459', 'y', 'v', '101', '413', '135', '341', 'g']

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