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
she must lump
we must lump
you must lump
they must lump 	I must be lumping
you must be lumping
she must be lumping
we must be lumping
you must be lumping
they must be lumping	I must have lumped
you must have lumped
she 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
she 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
she 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
she 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
she 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
she 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 she lump?
must we lump?
must you lump?
must they lump? 	must I be lumping?
must you be lumping?
must she be lumping?
must we be lumping?
must you be lumping?
must they be lumping? 	must I have lumped?
must you have lumped?
must she 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 she 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 she 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 she 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 she 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 she not have been lumping?
must we not have been lumping?
must you not have been lumping?
must they not have been lumping?