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]: ['t', '419', 'f']
[EX A]: 1, 4, 9

[EX Q]: ['235', '17', 'k', 'h', 'o', 'g', '97', 'h', '165']
[EX A]: 1, 2, 3, 5, 6, 7, 9

[EX Q]: ['d', 'x', 'b', 's', 'z', '241', '221', '445', 'v', '397', 'q', 'u']
[EX A]:
1, 2, 3, 4, 5, 7, 9