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: ['m', '347', 'o', 'i', 'u', '135', 'e', '179', 'q', '13']

A: 1, 3, 4, 5, 7, 9
****
Q: ['r', '273', 'h', '421', 'k', 'r', 'k', 't', 'x', 's', 'j']

A: 1, 2, 3, 4, 7
****
Q: ['u', 'w', '151', 'l', '115', '37', '453', 'a', '223']

A:
1, 2, 3, 4, 5, 7
****