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.

[EX Q]: ['a', '491', '477', '193', 'b', 'l', 'c']
[EX A]: 1, 3, 4, 7, 9

[EX Q]: ['239', 's', 'h', 'w', '131', 'i', 'x']
[EX A]: 1, 2, 3, 9

[EX Q]: ['109', 'z', 'l', 'u', '283', '285', 'l', '143', 'x', 'u', 's', 'd', 'c', '59']
[EX A]:
0, 1, 2, 3, 4, 5, 8, 9