Definition: 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.
Input: ['139', 'r', 'e', '311', 'i', '253', 'w', 't', 'j', '373', '437']

1, 2, 3, 4, 5, 7, 9