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: ['197', 'q']

Answer: 1, 7, 9


Question: ['g', '55', '153', '179', 'l', 'k', 'h', '21', '433', 'r', '53', '85', 'f', 'e']

Answer: 1, 2, 3, 4, 5, 7, 8, 9


Question: ['o', '27', '125', '443', 'd', 'u', '263', 's', '441', 't']

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