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: ['299', '199']

A: 1, 2, 9
****
Q: ['e', 's', '153', 'e', '377', 'c', 'v', '437']

A: 1, 3, 4, 5, 7
****
Q: ['f', '135', 's', '269', 'x', '45', 'p', '141', 'e']

A:
1, 2, 3, 4, 5, 6, 9
****