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: ['109', 't', '283', 'c', 'u', 'y', '251', 'x', '377', 'n', 's', 'd', 't', 'q', 'o']

Answer: 0, 1, 2, 3, 5, 7, 8, 9


Question: ['b', 'n', '369', '199', 'r', '165', '63', 'y', '331', '57']

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


Question: ['67', '233', '131', '415', 'r', '413', 'q', '21']

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


