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: ['497', '247', 'v', '327', '237', '257', '475', 's', '335', 'k']

A: 2, 3, 4, 5, 7, 9
****
Q: ['p', '45', 'z', '85', 'k', 'e', '191', '265', '261', 'w', 'l', '263', 'w']

A: 1, 2, 3, 4, 5, 6, 8, 9
****
Q: ['251', 'x', '423', '323', 'g', 's', '95', '447', '131', 'x', 'f', 'v', 'q', 'd', '411']

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