I can clear you can clear he can clear we can clear you can clear they can clear
V-ing form
I can be clearing you can be clearing he can be clearing we can be clearing you can be clearing they can be clearing
Perfect
I can have cleared you can have cleared he can have cleared we can have cleared you can have cleared they can have cleared
V-ing perfect
I can have been clearing you can have been clearing he can have been clearing we can have been clearing you can have been clearing they can have been clearing
Negation
Simple form
I can't clear you can't clear he can't clear we can't clear you can't clear they can't clear
V-ing form
I can't be clearing you can't be clearing he can't be clearing we can't be clearing you can't be clearing they can't be clearing
Perfect
I can't have cleared you can't have cleared he can't have cleared we can't have cleared you can't have cleared they can't have cleared
V-ing perfect
I can't have been clearing you can't have been clearing he can't have been clearing we can't have been clearing you can't have been clearing they can't have been clearing
Interrogative form
Simple form
can I clear? can you clear? can he clear? can we clear? can you clear? can they clear?
V-ing form
can I be clearing? can you be clearing? can he be clearing? can we be clearing? can you be clearing? can they be clearing?
Perfect
can I have cleared? can you have cleared? can he have cleared? can we have cleared? can you have cleared? can they have cleared?
V-ing perfect
can I have been clearing? can you have been clearing? can he have been clearing? can we have been clearing? can you have been clearing? can they have been clearing?
Interro-negative form
Simple form
can't I clear? can't you clear? can't he clear? can't we clear? can't you clear? can't they clear?
V-ing form
can't I be clearing? can't you be clearing? can't he be clearing? can't we be clearing? can't you be clearing? can't they be clearing?
Perfect
can't I have cleared? can't you have cleared? can't he have cleared? can't we have cleared? can't you have cleared? can't they have cleared?
V-ing perfect
can't I have been clearing? can't you have been clearing? can't he have been clearing? can't we have been clearing? can't you have been clearing? can't they have been clearing?