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: ['r', '273', 'h', '421', 'k', 'r', 'k', 't', 'x', 's', 'j']

Answer: 1, 2, 3, 4, 7


Question: ['265', '251', '241', 'd', 'a', '59', '21', '385', '41', 'l', 'o', '205']

Answer: 0, 1, 2, 3, 4, 5, 6, 8, 9


Question: ['65', '159', 'm', '171', 'q', 'j', '337', 'p', 'e', 'p', '163']

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