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: ['h', '281', 'x', '471']

A: 1, 2, 4, 7, 8
****
Q: ['291', 'p', '261', 'z', '21', 'w', 't', '417']

A: 1, 2, 4, 6, 7, 9
****
Q: ['v', '179', 'f', '387', 'p', '105', 'o', '179', '235', 'n', '441', '151', 'v', '103', 's']

A:
0, 1, 2, 3, 4, 5, 7, 8, 9
****