must drub
Verbe régulier : drub - drubbed- drubbed

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must drub
you must drub
she must drub
we must drub
you must drub
they must drub 	I must be drubbing
you must be drubbing
she must be drubbing
we must be drubbing
you must be drubbing
they must be drubbing	I must have drubbed
you must have drubbed
she must have drubbed
we must have drubbed
you must have drubbed
they must have drubbed	I must have been drubbing
you must have been drubbing
she must have been drubbing
we must have been drubbing
you must have been drubbing
they must have been drubbing	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must not drub
you must not drub
she must not drub
we must not drub
you must not drub
they must not drub 	I must not be drubbing
you must not be drubbing
she must not be drubbing
we must not be drubbing
you must not be drubbing
they must not be drubbing	I must not have drubbed
you must not have drubbed
she must not have drubbed
we must not have drubbed
you must not have drubbed
they must not have drubbed	I must not have been drubbing
you must not have been drubbing
she must not have been drubbing
we must not have been drubbing
you must not have been drubbing
they must not have been drubbing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I drub?
must you drub?
must she drub?
must we drub?
must you drub?
must they drub? 	must I be drubbing?
must you be drubbing?
must she be drubbing?
must we be drubbing?
must you be drubbing?
must they be drubbing? 	must I have drubbed?
must you have drubbed?
must she have drubbed?
must we have drubbed?
must you have drubbed?
must they have drubbed? 	must I have been drubbing?
must you have been drubbing?
must she have been drubbing?
must we have been drubbing?
must you have been drubbing?
must they have been drubbing? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I not drub?
must you not drub?
must she not drub?
must we not drub?
must you not drub?
must they not drub? 	must I not be drubbing?
must you not be drubbing?
must she not be drubbing?
must we not be drubbing?
must you not be drubbing?
must they not be drubbing? 	must I not have drubbed?
must you not have drubbed?
must she not have drubbed?
must we not have drubbed?
must you not have drubbed?
must they not have drubbed? 	must I not have been drubbing?
must you not have been drubbing?
must she not have been drubbing?
must we not have been drubbing?
must you not have been drubbing?
must they not have been drubbing?