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: ['f', '463', '169', '175']

A: 1, 3, 4, 5, 6, 7, 9
****
Q: ['293', '473', '79', 'j', '455', '285', 'k', 'd', '379', '249', '73', '229']

A: 2, 3, 4, 5, 7, 8, 9
****
Q: ['p', 'z', 'w', 'z', '281', 'n', '459', '139', 'o', '481', '131', 't', '9', '269', '483']

A:
1, 2, 3, 4, 5, 6, 8, 9
****