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:
['u', 'r']
answer:
-1


question:
['167', '229', '439', '389', '483', '207']
answer:
0, 1, 2, 3, 4, 6, 7, 8, 9


question:
['239', 'q', '95', '271', 'w', 'y', '475', '227', '331', '59', 'n', '319']
answer:

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