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: ['j', 'k']

A: -1
****
Q: ['285', 'h', '231', 'l', 'd', 'k', '309', '345', 'k', 'p', '351', '93', 'b', 'w']

A: 0, 1, 2, 3, 4, 5, 8, 9
****
Q: ['x', '445', 'i', 'f', 'n', '67', 'z', '139', 'y', 'x']

A:
1, 3, 4, 5, 6, 7, 9
****