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]: ['i', '325', '117', 'k', 'y', 'x', '49', '349', '477', 'u', '435']
[EX A]: 1, 2, 3, 4, 5, 7, 9

[EX Q]: ['v', 't', '81', '223', 'b', 'b', '313', '151', '63']
[EX A]: 1, 2, 3, 5, 6, 8

[EX Q]: ['491', '217', 'l', 'm', 't', '415', 'v', 'v', '375', '393', 'f', 'f', '117', '435', 'o']
[EX A]:
1, 2, 3, 4, 5, 7, 9