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.

['u', '73', 'x', 'f', 'e', '187', 'x', 'i', '215', '1', 'z', '129', '89', 'f', 'i']
1, 2, 3, 5, 7, 8, 9

['t', '437', 'o', 'w', 'x', 'e', 'r', 'r', '149', 'd', '391']
1, 3, 4, 7, 9

['a', '301']

0, 1, 3