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

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


Question: ['357', 'c', 'f', '3', 'q', 'w', 'm', 'l', '137', 'k']

Answer: 1, 3, 5, 7


Question: ['v', 'd', 'r', 'c', '441', 'p', '397', '373', '233', '91', '441', 'r', '191', 't', 'h']

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


