I can cycle you can cycle she can cycle we can cycle you can cycle they can cycle
V-ing form
I can be cycling you can be cycling she can be cycling we can be cycling you can be cycling they can be cycling
Perfect
I can have cycled you can have cycled she 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 she 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 she cannot cycle we cannot cycle you cannot cycle they cannot cycle
V-ing form
I cannot be cycling you cannot be cycling she cannot be cycling we cannot be cycling you cannot be cycling they cannot be cycling
Perfect
I cannot have cycled you cannot have cycled she 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 she 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 she cycle? can we cycle? can you cycle? can they cycle?
V-ing form
can I be cycling? can you be cycling? can she be cycling? can we be cycling? can you be cycling? can they be cycling?
Perfect
can I have cycled? can you have cycled? can she 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 she 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 she 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 she 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 she 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 she not have been cycling? can we not have been cycling? can you not have been cycling? can they not have been cycling?