English verb conjugation
CAN PORTEND

Regular verb: portend - portended - portended

Affirmation

Simple form	V-ing form
I can portend you can portend she can portend we can portend you can portend they can portend	I can be portending you can be portending she can be portending we can be portending you can be portending they can be portending
Perfect	V-ing perfect
I can have portended you can have portended she can have portended we can have portended you can have portended they can have portended	I can have been portending you can have been portending she can have been portending we can have been portending you can have been portending they can have been portending

Negation

Simple form	V-ing form
I can't portend you can't portend she can't portend we can't portend you can't portend they can't portend	I can't be portending you can't be portending she can't be portending we can't be portending you can't be portending they can't be portending
Perfect	V-ing perfect
I can't have portended you can't have portended she can't have portended we can't have portended you can't have portended they can't have portended	I can't have been portending you can't have been portending she can't have been portending we can't have been portending you can't have been portending they can't have been portending

Interrogative form

Simple form	V-ing form
can I portend? can you portend? can she portend? can we portend? can you portend? can they portend?	can I be portending? can you be portending? can she be portending? can we be portending? can you be portending? can they be portending?
Perfect	V-ing perfect
can I have portended? can you have portended? can she have portended? can we have portended? can you have portended? can they have portended?	can I have been portending? can you have been portending? can she have been portending? can we have been portending? can you have been portending? can they have been portending?

Interro-negative form

Simple form	V-ing form
can't I portend? can't you portend? can't she portend? can't we portend? can't you portend? can't they portend?	can't I be portending? can't you be portending? can't she be portending? can't we be portending? can't you be portending? can't they be portending?
Perfect	V-ing perfect
can't I have portended? can't you have portended? can't she have portended? can't we have portended? can't you have portended? can't they have portended?	can't I have been portending? can't you have been portending? can't she have been portending? can't we have been portending? can't you have been portending? can't they have been portending?