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]: ['157', '481', 'n', 't', 'd', 'j']
[EX A]: 1, 4, 5, 7, 8

[EX Q]: ['s', '443', '239', 't', '99']
[EX A]: 2, 3, 4, 9

[EX Q]: ['445', 'h', 'w', '37', 'j', '173', 'b', 'x', '451', '469', 's', '497', 'q', '231']
[EX A]:
1, 2, 3, 4, 5, 6, 7, 9