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: ['239', '439']

Answer: 2, 3, 4, 9


Question: ['439', '443', '175', 'e', 'm', '361', 'd']

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


Question: ['329', '475', '347', 'm', '65', '163', '107', '175', '271', '355', '105', 'o', 's', 'i', '475']

Answer:
0, 1, 2, 3, 4, 5, 6, 7, 9