I can cordon you can cordon he can cordon we can cordon you can cordon they can cordon
V-ing form
I can be cordoning you can be cordoning he can be cordoning we can be cordoning you can be cordoning they can be cordoning
Perfect
I can have cordoned you can have cordoned he can have cordoned we can have cordoned you can have cordoned they can have cordoned
V-ing perfect
I can have been cordoning you can have been cordoning he can have been cordoning we can have been cordoning you can have been cordoning they can have been cordoning
Negation
Simple form
I cannot cordon you cannot cordon he cannot cordon we cannot cordon you cannot cordon they cannot cordon
V-ing form
I cannot be cordoning you cannot be cordoning he cannot be cordoning we cannot be cordoning you cannot be cordoning they cannot be cordoning
Perfect
I cannot have cordoned you cannot have cordoned he cannot have cordoned we cannot have cordoned you cannot have cordoned they cannot have cordoned
V-ing perfect
I cannot have been cordoning you cannot have been cordoning he cannot have been cordoning we cannot have been cordoning you cannot have been cordoning they cannot have been cordoning
Interrogative form
Simple form
can I cordon? can you cordon? can he cordon? can we cordon? can you cordon? can they cordon?
V-ing form
can I be cordoning? can you be cordoning? can he be cordoning? can we be cordoning? can you be cordoning? can they be cordoning?
Perfect
can I have cordoned? can you have cordoned? can he have cordoned? can we have cordoned? can you have cordoned? can they have cordoned?
V-ing perfect
can I have been cordoning? can you have been cordoning? can he have been cordoning? can we have been cordoning? can you have been cordoning? can they have been cordoning?
Interro-negative form
Simple form
can I not cordon? can you not cordon? can he not cordon? can we not cordon? can you not cordon? can they not cordon?
V-ing form
can I not be cordoning? can you not be cordoning? can he not be cordoning? can we not be cordoning? can you not be cordoning? can they not be cordoning?
Perfect
can I not have cordoned? can you not have cordoned? can he not have cordoned? can we not have cordoned? can you not have cordoned? can they not have cordoned?
V-ing perfect
can I not have been cordoning? can you not have been cordoning? can he not have been cordoning? can we not have been cordoning? can you not have been cordoning? can they not have been cordoning?