could denitrify
Verbe régulier : denitrify - denitrified- denitrified

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could denitrify
you could denitrify
she could denitrify
we could denitrify
you could denitrify
they could denitrify 	I could be denitrifying
you could be denitrifying
she could be denitrifying
we could be denitrifying
you could be denitrifying
they could be denitrifying	I could have denitrified
you could have denitrified
she could have denitrified
we could have denitrified
you could have denitrified
they could have denitrified	I could have been denitrifying
you could have been denitrifying
she could have been denitrifying
we could have been denitrifying
you could have been denitrifying
they could have been denitrifying	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't denitrify
you couldn't denitrify
she couldn't denitrify
we couldn't denitrify
you couldn't denitrify
they couldn't denitrify 	I couldn't be denitrifying
you couldn't be denitrifying
she couldn't be denitrifying
we couldn't be denitrifying
you couldn't be denitrifying
they couldn't be denitrifying	I couldn't have denitrified
you couldn't have denitrified
she couldn't have denitrified
we couldn't have denitrified
you couldn't have denitrified
they couldn't have denitrified	I couldn't have been denitrifying
you couldn't have been denitrifying
she couldn't have been denitrifying
we couldn't have been denitrifying
you couldn't have been denitrifying
they couldn't have been denitrifying	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I denitrify?
could you denitrify?
could she denitrify?
could we denitrify?
could you denitrify?
could they denitrify? 	could I be denitrifying?
could you be denitrifying?
could she be denitrifying?
could we be denitrifying?
could you be denitrifying?
could they be denitrifying? 	could I have denitrified?
could you have denitrified?
could she have denitrified?
could we have denitrified?
could you have denitrified?
could they have denitrified? 	could I have been denitrifying?
could you have been denitrifying?
could she have been denitrifying?
could we have been denitrifying?
could you have been denitrifying?
could they have been denitrifying? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I denitrify?
couldn't you denitrify?
couldn't she denitrify?
couldn't we denitrify?
couldn't you denitrify?
couldn't they denitrify? 	couldn't I be denitrifying?
couldn't you be denitrifying?
couldn't she be denitrifying?
couldn't we be denitrifying?
couldn't you be denitrifying?
couldn't they be denitrifying? 	couldn't I have denitrified?
couldn't you have denitrified?
couldn't she have denitrified?
couldn't we have denitrified?
couldn't you have denitrified?
couldn't they have denitrified? 	couldn't I have been denitrifying?
couldn't you have been denitrifying?
couldn't she have been denitrifying?
couldn't we have been denitrifying?
couldn't you have been denitrifying?
couldn't they have been denitrifying?