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: ['489', 'y', 's', 'x', '203', 't', 'y', '461', 'v', 'k', '371', 'e']

Answer: 0, 1, 2, 3, 4, 6, 7, 8, 9


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: ['333', '207', '13', '339', 'n', '387']

Answer:
0, 1, 2, 3, 7, 8, 9