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]: ['497', '21', '239', '487', '149', 'q']
[EX A]: 1, 2, 3, 4, 7, 8, 9

[EX Q]: ['325', '269', '199', '177', 'n', '319', '385', '227', 'o', '393', 'y', 'g', 'f', '347', '109']
[EX A]: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9

[EX Q]: ['243', 'p']
[EX A]:
2, 3, 4