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: ['279', '381', '297', 'f', 'o', '15', 'w', '131', 'n', 'h', '45', '335', 'f', '477']
A: 
1, 2, 3, 4, 5, 7, 8, 9