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]: ['u', '73', 'x', 'f', 'e', '187', 'x', 'i', '215', '1', 'z', '129', '89', 'f', 'i']
[EX A]: 1, 2, 3, 5, 7, 8, 9

[EX Q]: ['q', 'g', 'z', '309']
[EX A]: 0, 3, 9

[EX Q]: ['m', '97', '231', 's', '437']
[EX A]:
1, 2, 3, 4, 7, 9