must grave
Verbe régulier : grave - graved- graved

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must grave
you must grave
he must grave
we must grave
you must grave
they must grave 	I must be graving
you must be graving
he must be graving
we must be graving
you must be graving
they must be graving	I must have graved
you must have graved
he must have graved
we must have graved
you must have graved
they must have graved	I must have been graving
you must have been graving
he must have been graving
we must have been graving
you must have been graving
they must have been graving	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't grave
you mustn't grave
he mustn't grave
we mustn't grave
you mustn't grave
they mustn't grave 	I mustn't be graving
you mustn't be graving
he mustn't be graving
we mustn't be graving
you mustn't be graving
they mustn't be graving	I mustn't have graved
you mustn't have graved
he mustn't have graved
we mustn't have graved
you mustn't have graved
they mustn't have graved	I mustn't have been graving
you mustn't have been graving
he mustn't have been graving
we mustn't have been graving
you mustn't have been graving
they mustn't have been graving	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I grave?
must you grave?
must he grave?
must we grave?
must you grave?
must they grave? 	must I be graving?
must you be graving?
must he be graving?
must we be graving?
must you be graving?
must they be graving? 	must I have graved?
must you have graved?
must he have graved?
must we have graved?
must you have graved?
must they have graved? 	must I have been graving?
must you have been graving?
must he have been graving?
must we have been graving?
must you have been graving?
must they have been graving? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mustn't I grave?
mustn't you grave?
mustn't he grave?
mustn't we grave?
mustn't you grave?
mustn't they grave? 	mustn't I be graving?
mustn't you be graving?
mustn't he be graving?
mustn't we be graving?
mustn't you be graving?
mustn't they be graving? 	mustn't I have graved?
mustn't you have graved?
mustn't he have graved?
mustn't we have graved?
mustn't you have graved?
mustn't they have graved? 	mustn't I have been graving?
mustn't you have been graving?
mustn't he have been graving?
mustn't we have been graving?
mustn't you have been graving?
mustn't they have been graving?