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: ['185', '425']

Answer: 1, 2, 4, 5, 8


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: ['47', '275', '413', '307', 'h', 'k', 'e', '13', 'o', 't']

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