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: ['z', 't', 'm', '295', '459', 'r', 'k', '149', '263', '5', '57', '455']

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


Question: ['t', '419', 'f']

Answer: 1, 4, 9


Question: ['u', 'r', 'h', '211', 's', 'h', 'a', '85', 'p', '255', '493', 'l', '287']

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