must upheave
Verbe régulier : upheave - upheaved- upheaved

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

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must not upheave
you must not upheave
he must not upheave
we must not upheave
you must not upheave
they must not upheave 	I must not be upheaving
you must not be upheaving
he must not be upheaving
we must not be upheaving
you must not be upheaving
they must not be upheaving	I must not have upheaved
you must not have upheaved
he must not have upheaved
we must not have upheaved
you must not have upheaved
they must not have upheaved	I must not have been upheaving
you must not have been upheaving
he must not have been upheaving
we must not have been upheaving
you must not have been upheaving
they must not have been upheaving	

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

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