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.

['z', 'e', '75', '379', 'c', 'f', 'g', '381', 'l', 'u', '197', '489']
1, 3, 4, 5, 7, 8, 9

['379', '485', '415', '37', '221', '125', '245', '87', 'a']
1, 2, 3, 4, 5, 7, 8, 9

['449', '5', 'x', '431', 'i', 'p', '117']

1, 3, 4, 5, 7, 9