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: ['l', 'm', 'h', '87', '265', 'e', '415', '325', 'p', 'b', '385']

Answer: 1, 2, 3, 4, 5, 6, 7, 8


Question: ['k', 'x', '299', 'a', 'y', '105', 's', '249', 'g', '439', 'k', '1', 'h', 'd', '43']

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


Question: ['m', 'd', 'u', 'p', '15', 'l', '411']

Answer:
1, 4, 5


