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: ['425', 'a', '351', 'v']

A: 1, 2, 3, 4, 5
****
Q: ['v', 'q', '139', '79', '149', '469', 'g', '239', '221', 'v', '77']

A: 1, 2, 3, 4, 6, 7, 9
****
Q: ['r', '249']

A:
2, 4, 9
****