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.

['247', 's', 'y', 'c', '421']
1, 2, 4, 7

['y', '281', '313', '21', 'i', '377', 'e', '111', '71', '231', '409', 'k']
0, 1, 2, 3, 4, 7, 8, 9

['217', 'a', 'a', 'z', '269', 'm', 'u']

1, 2, 6, 7, 9