English verb conjugation
CAN UPEND

Regular verb: upend - upended - upended

Affirmation

Simple form	V-ing form
I can upend you can upend he can upend we can upend you can upend they can upend	I can be upending you can be upending he can be upending we can be upending you can be upending they can be upending
Perfect	V-ing perfect
I can have upended you can have upended he can have upended we can have upended you can have upended they can have upended	I can have been upending you can have been upending he can have been upending we can have been upending you can have been upending they can have been upending

Negation

Simple form	V-ing form
I can't upend you can't upend he can't upend we can't upend you can't upend they can't upend	I can't be upending you can't be upending he can't be upending we can't be upending you can't be upending they can't be upending
Perfect	V-ing perfect
I can't have upended you can't have upended he can't have upended we can't have upended you can't have upended they can't have upended	I can't have been upending you can't have been upending he can't have been upending we can't have been upending you can't have been upending they can't have been upending

Interrogative form

Simple form	V-ing form
can I upend? can you upend? can he upend? can we upend? can you upend? can they upend?	can I be upending? can you be upending? can he be upending? can we be upending? can you be upending? can they be upending?
Perfect	V-ing perfect
can I have upended? can you have upended? can he have upended? can we have upended? can you have upended? can they have upended?	can I have been upending? can you have been upending? can he have been upending? can we have been upending? can you have been upending? can they have been upending?

Interro-negative form

Simple form	V-ing form
can't I upend? can't you upend? can't he upend? can't we upend? can't you upend? can't they upend?	can't I be upending? can't you be upending? can't he be upending? can't we be upending? can't you be upending? can't they be upending?
Perfect	V-ing perfect
can't I have upended? can't you have upended? can't he have upended? can't we have upended? can't you have upended? can't they have upended?	can't I have been upending? can't you have been upending? can't he have been upending? can't we have been upending? can't you have been upending? can't they have been upending?