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.

[Q]: ['r', '171', 'p', '299', 'u', 'n', '421', '331', 'h', '21', 'h', 'x', '435', '327', '373']
[A]: 1, 2, 3, 4, 5, 7, 9


[Q]: ['z', 'c', 'n', '351', 'f', '239', '71', '351', 'b', '1', '321', 'h', '163']
[A]: 1, 2, 3, 5, 6, 7, 9


[Q]: ['395', '307', '385', '337', '211', 'l', '291', '43', '21', 'q', '9', '439', '405']
[A]:
0, 1, 2, 3, 4, 5, 7, 8, 9