English verb conjugation
CAN SUBTEND

Regular verb: subtend - subtended - subtended

Affirmation

Simple form	V-ing form
I can subtend you can subtend he can subtend we can subtend you can subtend they can subtend	I can be subtending you can be subtending he can be subtending we can be subtending you can be subtending they can be subtending
Perfect	V-ing perfect
I can have subtended you can have subtended he can have subtended we can have subtended you can have subtended they can have subtended	I can have been subtending you can have been subtending he can have been subtending we can have been subtending you can have been subtending they can have been subtending

Negation

Simple form	V-ing form
I cannot subtend you cannot subtend he cannot subtend we cannot subtend you cannot subtend they cannot subtend	I cannot be subtending you cannot be subtending he cannot be subtending we cannot be subtending you cannot be subtending they cannot be subtending
Perfect	V-ing perfect
I cannot have subtended you cannot have subtended he cannot have subtended we cannot have subtended you cannot have subtended they cannot have subtended	I cannot have been subtending you cannot have been subtending he cannot have been subtending we cannot have been subtending you cannot have been subtending they cannot have been subtending

Interrogative form

Simple form	V-ing form
can I subtend? can you subtend? can he subtend? can we subtend? can you subtend? can they subtend?	can I be subtending? can you be subtending? can he be subtending? can we be subtending? can you be subtending? can they be subtending?
Perfect	V-ing perfect
can I have subtended? can you have subtended? can he have subtended? can we have subtended? can you have subtended? can they have subtended?	can I have been subtending? can you have been subtending? can he have been subtending? can we have been subtending? can you have been subtending? can they have been subtending?

Interro-negative form

Simple form	V-ing form
can I not subtend? can you not subtend? can he not subtend? can we not subtend? can you not subtend? can they not subtend?	can I not be subtending? can you not be subtending? can he not be subtending? can we not be subtending? can you not be subtending? can they not be subtending?
Perfect	V-ing perfect
can I not have subtended? can you not have subtended? can he not have subtended? can we not have subtended? can you not have subtended? can they not have subtended?	can I not have been subtending? can you not have been subtending? can he not have been subtending? can we not have been subtending? can you not have been subtending? can they not have been subtending?