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: ['459', '371', 'h', 't', 'l', '367', '149', '375', 'n', '387']

1, 3, 4, 5, 6, 7, 8, 9