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: ['293', '473', '79', 'j', '455', '285', 'k', 'd', '379', '249', '73', '229']

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


Question: ['161', '433', '373', '225', '161', 'b', '179', '311', 'f', '325', 'y', 'c', 'h', '87']

Answer: 1, 2, 3, 4, 5, 6, 7, 8, 9


Question: ['25', '129', '459', 'u']

Answer:
1, 2, 4, 5, 9