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.

[Q]: ['b', 'm', '471']
[A]: 1, 4, 7


[Q]: ['f', 'u', 'd', '51', 'w', '449', 'z', '313', '153', 'z', '319']
[A]: 1, 3, 4, 5, 9


[Q]: ['397', '309', 'l']
[A]:
0, 3, 7, 9