English verb conjugation
CAN UPHEAVE

Regular verb: upheave - upheaved - upheaved

Affirmation

Simple form	V-ing form
I can upheave you can upheave he can upheave we can upheave you can upheave they can upheave	I can be upheaving you can be upheaving he can be upheaving we can be upheaving you can be upheaving they can be upheaving
Perfect	V-ing perfect
I can have upheaved you can have upheaved he can have upheaved we can have upheaved you can have upheaved they can have upheaved	I can have been upheaving you can have been upheaving he can have been upheaving we can have been upheaving you can have been upheaving they can have been upheaving

Negation

Simple form	V-ing form
I cannot upheave you cannot upheave he cannot upheave we cannot upheave you cannot upheave they cannot upheave	I cannot be upheaving you cannot be upheaving he cannot be upheaving we cannot be upheaving you cannot be upheaving they cannot be upheaving
Perfect	V-ing perfect
I cannot have upheaved you cannot have upheaved he cannot have upheaved we cannot have upheaved you cannot have upheaved they cannot have upheaved	I cannot have been upheaving you cannot have been upheaving he cannot have been upheaving we cannot have been upheaving you cannot have been upheaving they cannot have been upheaving

Interrogative form

Simple form	V-ing form
can I upheave? can you upheave? can he upheave? can we upheave? can you upheave? can they upheave?	can I be upheaving? can you be upheaving? can he be upheaving? can we be upheaving? can you be upheaving? can they be upheaving?
Perfect	V-ing perfect
can I have upheaved? can you have upheaved? can he have upheaved? can we have upheaved? can you have upheaved? can they have upheaved?	can I have been upheaving? can you have been upheaving? can he have been upheaving? can we have been upheaving? can you have been upheaving? can they have been upheaving?

Interro-negative form

Simple form	V-ing form
can I not upheave? can you not upheave? can he not upheave? can we not upheave? can you not upheave? can they not upheave?	can I not be upheaving? can you not be upheaving? can he not be upheaving? can we not be upheaving? can you not be upheaving? can they not be upheaving?
Perfect	V-ing perfect
can I not have upheaved? can you not have upheaved? can he not have upheaved? can we not have upheaved? can you not have upheaved? can they not have upheaved?	can I not have been upheaving? can you not have been upheaving? can he not have been upheaving? can we not have been upheaving? can you not have been upheaving? can they not have been upheaving?