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.

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

['295', 'd', 's', '1', '201', 'n', 'f', '15', '151', '307', 'b', '103', '255']
0, 1, 2, 3, 5, 7, 9

['g', 'n', '401']

0, 1, 4