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.

Q: ['y', '281', '313', '21', 'i', '377', 'e', '111', '71', '231', '409', 'k']

A: 0, 1, 2, 3, 4, 7, 8, 9
****
Q: ['v', 'w', '125', 'r', 'a', '309', '259', 'c', 'a', 'c', 'w', '273', '279']

A: 0, 1, 2, 3, 5, 7, 9
****
Q: ['c', '151', 'k', 'z', '117']

A:
1, 5, 7
****