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]: ['339', '473', '485']
[EX A]: 3, 4, 5, 7, 8, 9

[EX Q]: ['t', '361', 'o', 'j', '395', 'u', '211', 'a', 'i', 'i', '375', 'h', '451']
[EX A]: 1, 2, 3, 4, 5, 6, 7, 9

[EX Q]: ['m', '347', 'o', 'i', 'u', '135', 'e', '179', 'q', '13']
[EX A]:
1, 3, 4, 5, 7, 9