I can knight you can knight he can knight we can knight you can knight they can knight
V-ing form
I can be knighting you can be knighting he can be knighting we can be knighting you can be knighting they can be knighting
Perfect
I can have knighted you can have knighted he can have knighted we can have knighted you can have knighted they can have knighted
V-ing perfect
I can have been knighting you can have been knighting he can have been knighting we can have been knighting you can have been knighting they can have been knighting
Negation
Simple form
I can't knight you can't knight he can't knight we can't knight you can't knight they can't knight
V-ing form
I can't be knighting you can't be knighting he can't be knighting we can't be knighting you can't be knighting they can't be knighting
Perfect
I can't have knighted you can't have knighted he can't have knighted we can't have knighted you can't have knighted they can't have knighted
V-ing perfect
I can't have been knighting you can't have been knighting he can't have been knighting we can't have been knighting you can't have been knighting they can't have been knighting
Interrogative form
Simple form
can I knight? can you knight? can he knight? can we knight? can you knight? can they knight?
V-ing form
can I be knighting? can you be knighting? can he be knighting? can we be knighting? can you be knighting? can they be knighting?
Perfect
can I have knighted? can you have knighted? can he have knighted? can we have knighted? can you have knighted? can they have knighted?
V-ing perfect
can I have been knighting? can you have been knighting? can he have been knighting? can we have been knighting? can you have been knighting? can they have been knighting?
Interro-negative form
Simple form
can't I knight? can't you knight? can't he knight? can't we knight? can't you knight? can't they knight?
V-ing form
can't I be knighting? can't you be knighting? can't he be knighting? can't we be knighting? can't you be knighting? can't they be knighting?
Perfect
can't I have knighted? can't you have knighted? can't he have knighted? can't we have knighted? can't you have knighted? can't they have knighted?
V-ing perfect
can't I have been knighting? can't you have been knighting? can't he have been knighting? can't we have been knighting? can't you have been knighting? can't they have been knighting?