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: ['477', '293', '301', '269', '149', 'm']

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


Question: ['433', '133', '255', 'h', '59', 'm', '315', '149', 't', 'y', 'n', '59', '493', '295']

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


Question: ['185', '327', 'b', 'w', 's', 'c', 'x', 'e', '205', 'v', 'j', '453', 'h', 'k']

Answer:
0, 1, 2, 3, 4, 5, 7, 8