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]: ['v', 'q', '139', '79', '149', '469', 'g', '239', '221', 'v', '77']
[EX A]: 1, 2, 3, 4, 6, 7, 9

[EX Q]: ['t', 'y', '331']
[EX A]: 1, 3

[EX Q]: ['h', '195', 'h', '455']
[EX A]:
1, 4, 5, 9