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: ['99', '245', 'c', '435', '255', 'v']

A: 2, 3, 4, 5, 9
****
Q: ['f', 't', 'a', '163', '297', '97', '487', '341', '193']

A: 1, 2, 3, 4, 6, 7, 8, 9
****
Q: ['r', 'p', 'c']

A:
-1
****