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]: ['m', 'n', '481', 'a', '343', '19', 'l', 'l', '477', '71']
[EX A]: 1, 3, 4, 7, 8, 9

[EX Q]: ['t', 'v', '469', 'n']
[EX A]: 4, 6, 9

[EX Q]: ['111', 'p', 'g', 'n', 'r', '33', '459', '275', 'v', 'a', 'i', 'x', 'w']
[EX A]:
1, 2, 3, 4, 5, 7, 9