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]: ['b', '351', 'g', 'k', '29', '15', '411', '97', 'r', '27', '279']
[EX A]: 1, 2, 3, 4, 5, 7, 9

[EX Q]: ['265', '251', '241', 'd', 'a', '59', '21', '385', '41', 'l', 'o', '205']
[EX A]: 0, 1, 2, 3, 4, 5, 6, 8, 9

[EX Q]: ['3', '291', '497', 't', 'f', '419', 'u', '95', 'y', '229', 'h', '7']
[EX A]:
1, 2, 3, 4, 5, 7, 9