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.

['w', '13', 'b', '455', 'b', 'k']
1, 3, 4, 5

['a', '399', 's', 'e', '495', 'd', 'f', 'a', '323']
2, 3, 4, 5, 9

['389', '463', '21', '161', 'd', '467', 'x', 'u', '493', 'd', 'r', '431', '251', 'f', 'k']

1, 2, 3, 4, 5, 6, 7, 8, 9