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.

['c', 'u', 'b', '347', '191']
1, 3, 4, 7, 9

['t', '103', '349', '203', 'b', 'z', 'i', '337', 'y', '137', '77', 'p', 'k']
0, 1, 2, 3, 4, 7, 9

['i', '357', 'u']

3, 5, 7