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.
--------
Question: ['171', 'h', '53', 'o', 'q']

Answer: 1, 3, 5, 7


Question: ['t', '211', 'h', '99']

Answer: 1, 2, 9


Question: ['139', 't', 'j', 'g', 'g', 'h', '289', 'r']

Answer:
1, 2, 3, 8, 9