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.

[Q]: ['257', '111', 'g', '277', '473', '105', 'x', '217']
[A]: 0, 1, 2, 3, 4, 5, 7


[Q]: ['377', 'z', '421', '137', 't', 'v', 's', 'l']
[A]: 1, 2, 3, 4, 7


[Q]: ['r', 'i', 'b', 'l']
[A]:
-1


