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: ['69', '307', 'l', 'j', '167', 'o', '427', 'j']

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


Question: ['415', '365', '373', 't', 'n']

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


Question: ['d', 'v', 'i', 'h', '29', 'm', '191', '269', '17', 'x', '247']

Answer:
1, 2, 4, 6, 7, 9