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.

['469', 'y', 'j', 'u', '475', 'k', 'k']
4, 5, 6, 7, 9

['v', 'w', '125', 'r', 'a', '309', '259', 'c', 'a', 'c', 'w', '273', '279']
0, 1, 2, 3, 5, 7, 9

['303', 'k', 'm', 'v', '123']

0, 1, 2, 3