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', '157', '63', '411', 'x', 'c', 'k', 'z', 'i', '279', '311', '431']
[EX A]: 1, 2, 3, 4, 5, 6, 7, 9

[EX Q]: ['r', 'u', '83', 'x', '155', '89', 'c', '391', '41', 'o', 'i', '161']
[EX A]: 1, 3, 4, 5, 6, 8, 9

[EX Q]: ['a', '13', 'q', 'e', 'y', '197', 'a']
[EX A]:
1, 3, 7, 9