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:
['l', 'g', 'o', 'x', '27', 'r', '123', '395', 'p', '27', '213', '455', 'y', '97']
answer:
1, 2, 3, 4, 5, 7, 9


question:
['353', 'd', 'h', 'd']
answer:
3, 5


question:
['307', '453', 'h', 'b', 't', 'c', '29', 'y', 'j', '21', 'b', 'e']
answer:

0, 1, 2, 3, 4, 5, 7, 9