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

['g', '185', '73', 'h', '455', '333', 'l', '403', 'k', 'e', '77', '429', '423', '453']
0, 1, 2, 3, 4, 5, 7, 8, 9

['n', 't', 'z', '129', 'm', '7']

1, 2, 7, 9