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]: ['g', '169', '93', 'z', 'h', '493', 'r']
[EX A]: 1, 3, 4, 6, 9

[EX Q]: ['e', '313', '259', 'i', 'h']
[EX A]: 1, 2, 3, 5, 9

[EX Q]: ['415', 'v', 'o', '301', '105', 'b', '141', '65', 't', '213', 'h', '435', 'e']
[EX A]:
0, 1, 2, 3, 4, 5, 6