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:
['i', 'f', '109']
answer:
0, 1, 9


question:
['f', '253', '211', '85', 'm', 'y', 'l', 'r', 't', 'm', '193', 'p', '415', 'h', 'h']
answer:
1, 2, 3, 4, 5, 8, 9


question:
['195', '299']
answer:

1, 2, 5, 9