Teacher: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.
Teacher: Now, understand the problem? Solve this instance: ['331', 's', '345', '233', 'j', '383', '141', '483', '131', 'y', '207', '227']
Student: