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: ['r', '135', 't', 'm', 'f', '329', '475', '243', 'z', 'q', '31', '141']

A: 1, 2, 3, 4, 5, 7, 9
****
Q: ['s', 'y', '133', 'c', '415', 'p']

A: 1, 3, 4, 5
****
Q: ['u', 'x', 'e', '315', 'r', '21', 'c']

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