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', '437', 'o', 'w', 'x', 'e', 'r', 'r', '149', 'd', '391']
[EX A]: 1, 3, 4, 7, 9

[EX Q]: ['353', 'k', 'j', '1', '375', 'e', 'd']
[EX A]: 1, 3, 5, 7

[EX Q]: ['u', '351', '11', '399', '269', 'v', 'c', '293', '67', '203']
[EX A]:
0, 1, 2, 3, 5, 6, 7, 9