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: ['235', '17', 'g', '125', '455', 'h', 'u', 'u', 'y', '219', '129', 'q', 'u', 'r']

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


Question: ['375', '457', '423', 'q', 't']

Answer: 2, 3, 4, 5, 7


Question: ['353', 'k', 'j', '285']

Answer:
2, 3, 5, 8