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', 'z', '273']
2, 3, 7

['h', '475', 'x', '53', '461', 'c']
1, 3, 4, 5, 6, 7

['483', '281', 'r']

1, 2, 3, 4, 8