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]: ['v', '105', 'p', 'w', '295', '239', '453']
[EX A]: 0, 1, 2, 3, 4, 5, 9

[EX Q]: ['a', '55', 's', '71', '271', '211']
[EX A]: 1, 2, 5, 7

[EX Q]: ['q', 'g', '451', '255', 'z', '257', 'f', 'g', 'r', 't', 'p']
[EX A]:
1, 2, 4, 5, 7