must lump
Verbe régulier : lump - lumped- lumped
Traduction française : regrouper 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must lump
you must lump
he must lump
we must lump
you must lump
they must lump 	I must be lumping
you must be lumping
he must be lumping
we must be lumping
you must be lumping
they must be lumping	I must have lumped
you must have lumped
he must have lumped
we must have lumped
you must have lumped
they must have lumped	I must have been lumping
you must have been lumping
he must have been lumping
we must have been lumping
you must have been lumping
they must have been lumping	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must not lump
you must not lump
he must not lump
we must not lump
you must not lump
they must not lump 	I must not be lumping
you must not be lumping
he must not be lumping
we must not be lumping
you must not be lumping
they must not be lumping	I must not have lumped
you must not have lumped
he must not have lumped
we must not have lumped
you must not have lumped
they must not have lumped	I must not have been lumping
you must not have been lumping
he must not have been lumping
we must not have been lumping
you must not have been lumping
they must not have been lumping	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I lump?
must you lump?
must he lump?
must we lump?
must you lump?
must they lump? 	must I be lumping?
must you be lumping?
must he be lumping?
must we be lumping?
must you be lumping?
must they be lumping? 	must I have lumped?
must you have lumped?
must he have lumped?
must we have lumped?
must you have lumped?
must they have lumped? 	must I have been lumping?
must you have been lumping?
must he have been lumping?
must we have been lumping?
must you have been lumping?
must they have been lumping? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I not lump?
must you not lump?
must he not lump?
must we not lump?
must you not lump?
must they not lump? 	must I not be lumping?
must you not be lumping?
must he not be lumping?
must we not be lumping?
must you not be lumping?
must they not be lumping? 	must I not have lumped?
must you not have lumped?
must he not have lumped?
must we not have lumped?
must you not have lumped?
must they not have lumped? 	must I not have been lumping?
must you not have been lumping?
must he not have been lumping?
must we not have been lumping?
must you not have been lumping?
must they not have been lumping?