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.

['243', 't', '249', 'q', '459', '469', '301', 'j', '215', '21']
0, 1, 2, 3, 4, 5, 6, 9

['c', '435', 'c', 'q', 'u', '191', 'b', 'l', '217']
1, 2, 3, 4, 5, 7, 9

['331', '21', '239', 'n', '497', '427', '479']

1, 2, 3, 4, 7, 9