instruction:
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:
['o', '235', '479', 'e', '199', 'c', '25', '59', 'g', '415', '201', '129', 'a', 'i', 'c']
answer:
0, 1, 2, 3, 4, 5, 7, 9


question:
['433', 'c', 'l', '493', 'k', '469']
answer:

3, 4, 6, 9