must plumb
Verbe régulier : plumb - plumbed- plumbed
Traduction française : sonder 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must plumb
you must plumb
she must plumb
we must plumb
you must plumb
they must plumb 	I must be plumbing
you must be plumbing
she must be plumbing
we must be plumbing
you must be plumbing
they must be plumbing	I must have plumbed
you must have plumbed
she must have plumbed
we must have plumbed
you must have plumbed
they must have plumbed	I must have been plumbing
you must have been plumbing
she must have been plumbing
we must have been plumbing
you must have been plumbing
they must have been plumbing	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must not plumb
you must not plumb
she must not plumb
we must not plumb
you must not plumb
they must not plumb 	I must not be plumbing
you must not be plumbing
she must not be plumbing
we must not be plumbing
you must not be plumbing
they must not be plumbing	I must not have plumbed
you must not have plumbed
she must not have plumbed
we must not have plumbed
you must not have plumbed
they must not have plumbed	I must not have been plumbing
you must not have been plumbing
she must not have been plumbing
we must not have been plumbing
you must not have been plumbing
they must not have been plumbing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I plumb?
must you plumb?
must she plumb?
must we plumb?
must you plumb?
must they plumb? 	must I be plumbing?
must you be plumbing?
must she be plumbing?
must we be plumbing?
must you be plumbing?
must they be plumbing? 	must I have plumbed?
must you have plumbed?
must she have plumbed?
must we have plumbed?
must you have plumbed?
must they have plumbed? 	must I have been plumbing?
must you have been plumbing?
must she have been plumbing?
must we have been plumbing?
must you have been plumbing?
must they have been plumbing? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I not plumb?
must you not plumb?
must she not plumb?
must we not plumb?
must you not plumb?
must they not plumb? 	must I not be plumbing?
must you not be plumbing?
must she not be plumbing?
must we not be plumbing?
must you not be plumbing?
must they not be plumbing? 	must I not have plumbed?
must you not have plumbed?
must she not have plumbed?
must we not have plumbed?
must you not have plumbed?
must they not have plumbed? 	must I not have been plumbing?
must you not have been plumbing?
must she not have been plumbing?
must we not have been plumbing?
must you not have been plumbing?
must they not have been plumbing?