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]: ['299', '199']
[EX A]: 1, 2, 9

[EX Q]: ['n', '319', 's', '325', '177', '161', '43', 'g', 'o', '59', 'w', 'y', 'g', 'm']
[EX A]: 1, 2, 3, 4, 5, 6, 7, 9

[EX Q]: ['g', 'f', '263', 'a', 'g', '477', '213']
[EX A]:
1, 2, 3, 4, 6, 7