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.

['v', '477', 'j', '339', '245', 'r', '417', 'g', '475', 'n', 'q', '171']
1, 2, 3, 4, 5, 7, 9

['t', '493', 's', 'f', '279', 'f']
2, 3, 4, 7, 9

['185', 'l']

1, 5, 8