must coextend
Verbe régulier : coextend - coextended- coextended

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must coextend
you must coextend
he must coextend
we must coextend
you must coextend
they must coextend 	I must be coextending
you must be coextending
he must be coextending
we must be coextending
you must be coextending
they must be coextending	I must have coextended
you must have coextended
he must have coextended
we must have coextended
you must have coextended
they must have coextended	I must have been coextending
you must have been coextending
he must have been coextending
we must have been coextending
you must have been coextending
they must have been coextending	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must not coextend
you must not coextend
he must not coextend
we must not coextend
you must not coextend
they must not coextend 	I must not be coextending
you must not be coextending
he must not be coextending
we must not be coextending
you must not be coextending
they must not be coextending	I must not have coextended
you must not have coextended
he must not have coextended
we must not have coextended
you must not have coextended
they must not have coextended	I must not have been coextending
you must not have been coextending
he must not have been coextending
we must not have been coextending
you must not have been coextending
they must not have been coextending	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I coextend?
must you coextend?
must he coextend?
must we coextend?
must you coextend?
must they coextend? 	must I be coextending?
must you be coextending?
must he be coextending?
must we be coextending?
must you be coextending?
must they be coextending? 	must I have coextended?
must you have coextended?
must he have coextended?
must we have coextended?
must you have coextended?
must they have coextended? 	must I have been coextending?
must you have been coextending?
must he have been coextending?
must we have been coextending?
must you have been coextending?
must they have been coextending? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I not coextend?
must you not coextend?
must he not coextend?
must we not coextend?
must you not coextend?
must they not coextend? 	must I not be coextending?
must you not be coextending?
must he not be coextending?
must we not be coextending?
must you not be coextending?
must they not be coextending? 	must I not have coextended?
must you not have coextended?
must he not have coextended?
must we not have coextended?
must you not have coextended?
must they not have coextended? 	must I not have been coextending?
must you not have been coextending?
must he not have been coextending?
must we not have been coextending?
must you not have been coextending?
must they not have been coextending?