I can cycle you can cycle he can cycle we can cycle you can cycle they can cycle
V-ing form
I can be cycling you can be cycling he can be cycling we can be cycling you can be cycling they can be cycling
Perfect
I can have cycled you can have cycled he can have cycled we can have cycled you can have cycled they can have cycled
V-ing perfect
I can have been cycling you can have been cycling he can have been cycling we can have been cycling you can have been cycling they can have been cycling
Negation
Simple form
I cannot cycle you cannot cycle he cannot cycle we cannot cycle you cannot cycle they cannot cycle
V-ing form
I cannot be cycling you cannot be cycling he cannot be cycling we cannot be cycling you cannot be cycling they cannot be cycling
Perfect
I cannot have cycled you cannot have cycled he cannot have cycled we cannot have cycled you cannot have cycled they cannot have cycled
V-ing perfect
I cannot have been cycling you cannot have been cycling he cannot have been cycling we cannot have been cycling you cannot have been cycling they cannot have been cycling
Interrogative form
Simple form
can I cycle? can you cycle? can he cycle? can we cycle? can you cycle? can they cycle?
V-ing form
can I be cycling? can you be cycling? can he be cycling? can we be cycling? can you be cycling? can they be cycling?
Perfect
can I have cycled? can you have cycled? can he have cycled? can we have cycled? can you have cycled? can they have cycled?
V-ing perfect
can I have been cycling? can you have been cycling? can he have been cycling? can we have been cycling? can you have been cycling? can they have been cycling?
Interro-negative form
Simple form
can I not cycle? can you not cycle? can he not cycle? can we not cycle? can you not cycle? can they not cycle?
V-ing form
can I not be cycling? can you not be cycling? can he not be cycling? can we not be cycling? can you not be cycling? can they not be cycling?
Perfect
can I not have cycled? can you not have cycled? can he not have cycled? can we not have cycled? can you not have cycled? can they not have cycled?
V-ing perfect
can I not have been cycling? can you not have been cycling? can he not have been cycling? can we not have been cycling? can you not have been cycling? can they not have been cycling?