English verb conjugation
CAN PORTEND

Regular verb: portend - portended - portended

Affirmation

Simple form	V-ing form
I can portend you can portend he can portend we can portend you can portend they can portend	I can be portending you can be portending he 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 he 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 he 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 he 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 he 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 he 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 he 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 he portend? can we portend? can you portend? can they portend?	can I be portending? can you be portending? can he 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 he 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 he 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 he 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 he 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 he 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 he have been portending? can't we have been portending? can't you have been portending? can't they have been portending?