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.

['i', 'b', 'w', '409', 'f', '67', 's', '21', 'y', 'c', '401', 'f', 'k', '319']
0, 1, 2, 3, 4, 6, 7, 9

['b', '351', 'g', 'k', '29', '15', '411', '97', 'r', '27', '279']
1, 2, 3, 4, 5, 7, 9

['g', 't', 'v', '129']

1, 2, 9