Detailed Instructions: 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: ['157', 'g', '267', '45', 'l', 'l', '347', '57', '439']
A:
1, 2, 3, 4, 5, 6, 7, 9