I can pave you can pave she can pave we can pave you can pave they can pave
V-ing form
I can be paving you can be paving she can be paving we can be paving you can be paving they can be paving
Perfect
I can have paved you can have paved she can have paved we can have paved you can have paved they can have paved
V-ing perfect
I can have been paving you can have been paving she can have been paving we can have been paving you can have been paving they can have been paving
Negation
Simple form
I can't pave you can't pave she can't pave we can't pave you can't pave they can't pave
V-ing form
I can't be paving you can't be paving she can't be paving we can't be paving you can't be paving they can't be paving
Perfect
I can't have paved you can't have paved she can't have paved we can't have paved you can't have paved they can't have paved
V-ing perfect
I can't have been paving you can't have been paving she can't have been paving we can't have been paving you can't have been paving they can't have been paving
Interrogative form
Simple form
can I pave? can you pave? can she pave? can we pave? can you pave? can they pave?
V-ing form
can I be paving? can you be paving? can she be paving? can we be paving? can you be paving? can they be paving?
Perfect
can I have paved? can you have paved? can she have paved? can we have paved? can you have paved? can they have paved?
V-ing perfect
can I have been paving? can you have been paving? can she have been paving? can we have been paving? can you have been paving? can they have been paving?
Interro-negative form
Simple form
can't I pave? can't you pave? can't she pave? can't we pave? can't you pave? can't they pave?
V-ing form
can't I be paving? can't you be paving? can't she be paving? can't we be paving? can't you be paving? can't they be paving?
Perfect
can't I have paved? can't you have paved? can't she have paved? can't we have paved? can't you have paved? can't they have paved?
V-ing perfect
can't I have been paving? can't you have been paving? can't she have been paving? can't we have been paving? can't you have been paving? can't they have been paving?