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]: ['469', 'y', 'j', 'u', '475', 'k', 'k']
[EX A]: 4, 5, 6, 7, 9

[EX Q]: ['i', '485', '109', 'e', '15', '461', 'r', 'l', '223', '327']
[EX A]: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9

[EX Q]: ['t', 'l', '251', '431']
[EX A]:
1, 2, 3, 4, 5