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]: ['i', '249', '287']
[EX A]: 2, 4, 7, 8, 9

[EX Q]: ['475', 'd', '467', 'h', 'r', 'r', '139', '307', '141', 'f']
[EX A]: 0, 1, 3, 4, 5, 6, 7, 9

[EX Q]: ['b', 'o', 'u', 'z', '455']
[EX A]:
4, 5