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: ['y', 'l', 'g', 'w', '13', 'd', '123', '279', '293', 'n', '341', 'n', '359', '35', 'd']

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


Question: ['q', 'g', 'z', '309']

Answer: 0, 3, 9


Question: ['493', '119', '423', '371', 'r', 'y', 'u', '403', '87']

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