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 can't upheave you can't upheave he can't upheave we can't upheave you can't upheave they can't upheave	I can't be upheaving you can't be upheaving he can't be upheaving we can't be upheaving you can't be upheaving they can't be upheaving
Perfect	V-ing perfect
I can't have upheaved you can't have upheaved he can't have upheaved we can't have upheaved you can't have upheaved they can't have upheaved	I can't have been upheaving you can't have been upheaving he can't have been upheaving we can't have been upheaving you can't have been upheaving they can't 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't I upheave? can't you upheave? can't he upheave? can't we upheave? can't you upheave? can't they upheave?	can't I be upheaving? can't you be upheaving? can't he be upheaving? can't we be upheaving? can't you be upheaving? can't they be upheaving?
Perfect	V-ing perfect
can't I have upheaved? can't you have upheaved? can't he have upheaved? can't we have upheaved? can't you have upheaved? can't they have upheaved?	can't I have been upheaving? can't you have been upheaving? can't he have been upheaving? can't we have been upheaving? can't you have been upheaving? can't they have been upheaving?