could upheave
Verbe régulier : upheave - upheaved- upheaved

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could upheave
you could upheave
he could upheave
we could upheave
you could upheave
they could upheave 	I could be upheaving
you could be upheaving
he could be upheaving
we could be upheaving
you could be upheaving
they could be upheaving	I could have upheaved
you could have upheaved
he could have upheaved
we could have upheaved
you could have upheaved
they could have upheaved	I could have been upheaving
you could have been upheaving
he could have been upheaving
we could have been upheaving
you could have been upheaving
they could have been upheaving	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't upheave
you couldn't upheave
he couldn't upheave
we couldn't upheave
you couldn't upheave
they couldn't upheave 	I couldn't be upheaving
you couldn't be upheaving
he couldn't be upheaving
we couldn't be upheaving
you couldn't be upheaving
they couldn't be upheaving	I couldn't have upheaved
you couldn't have upheaved
he couldn't have upheaved
we couldn't have upheaved
you couldn't have upheaved
they couldn't have upheaved	I couldn't have been upheaving
you couldn't have been upheaving
he couldn't have been upheaving
we couldn't have been upheaving
you couldn't have been upheaving
they couldn't have been upheaving	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I upheave?
could you upheave?
could he upheave?
could we upheave?
could you upheave?
could they upheave? 	could I be upheaving?
could you be upheaving?
could he be upheaving?
could we be upheaving?
could you be upheaving?
could they be upheaving? 	could I have upheaved?
could you have upheaved?
could he have upheaved?
could we have upheaved?
could you have upheaved?
could they have upheaved? 	could I have been upheaving?
could you have been upheaving?
could he have been upheaving?
could we have been upheaving?
could you have been upheaving?
could they have been upheaving? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I upheave?
couldn't you upheave?
couldn't he upheave?
couldn't we upheave?
couldn't you upheave?
couldn't they upheave? 	couldn't I be upheaving?
couldn't you be upheaving?
couldn't he be upheaving?
couldn't we be upheaving?
couldn't you be upheaving?
couldn't they be upheaving? 	couldn't I have upheaved?
couldn't you have upheaved?
couldn't he have upheaved?
couldn't we have upheaved?
couldn't you have upheaved?
couldn't they have upheaved? 	couldn't I have been upheaving?
couldn't you have been upheaving?
couldn't he have been upheaving?
couldn't we have been upheaving?
couldn't you have been upheaving?
couldn't they have been upheaving?