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: ['279', '115']

A: 1, 2, 5, 7, 9
****
Q: ['f', '367', 'w', '227', '201', 'n', '213', '11']

A: 0, 1, 2, 3, 6, 7
****
Q: ['261', '495', 'd', '131', 'b', 'g', 'w']

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