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]: ['473', '449', '357', 'p', 'p', 'e', '377', '77']
[EX A]: 3, 4, 5, 7, 9

[EX Q]: ['469', '65', '111', '135', '209', 'g', '407', 'd', 'r', '325']
[EX A]: 0, 1, 2, 3, 4, 5, 6, 7, 9

[EX Q]: ['w', 'm', 'm', 'h', '129', '453']
[EX A]:
1, 2, 3, 4, 5, 9