could acidify
Verbe régulier : acidify - acidified- acidified

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could acidify
you could acidify
she could acidify
we could acidify
you could acidify
they could acidify 	I could be acidifying
you could be acidifying
she could be acidifying
we could be acidifying
you could be acidifying
they could be acidifying	I could have acidified
you could have acidified
she could have acidified
we could have acidified
you could have acidified
they could have acidified	I could have been acidifying
you could have been acidifying
she could have been acidifying
we could have been acidifying
you could have been acidifying
they could have been acidifying	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't acidify
you couldn't acidify
she couldn't acidify
we couldn't acidify
you couldn't acidify
they couldn't acidify 	I couldn't be acidifying
you couldn't be acidifying
she couldn't be acidifying
we couldn't be acidifying
you couldn't be acidifying
they couldn't be acidifying	I couldn't have acidified
you couldn't have acidified
she couldn't have acidified
we couldn't have acidified
you couldn't have acidified
they couldn't have acidified	I couldn't have been acidifying
you couldn't have been acidifying
she couldn't have been acidifying
we couldn't have been acidifying
you couldn't have been acidifying
they couldn't have been acidifying	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I acidify?
could you acidify?
could she acidify?
could we acidify?
could you acidify?
could they acidify? 	could I be acidifying?
could you be acidifying?
could she be acidifying?
could we be acidifying?
could you be acidifying?
could they be acidifying? 	could I have acidified?
could you have acidified?
could she have acidified?
could we have acidified?
could you have acidified?
could they have acidified? 	could I have been acidifying?
could you have been acidifying?
could she have been acidifying?
could we have been acidifying?
could you have been acidifying?
could they have been acidifying? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I acidify?
couldn't you acidify?
couldn't she acidify?
couldn't we acidify?
couldn't you acidify?
couldn't they acidify? 	couldn't I be acidifying?
couldn't you be acidifying?
couldn't she be acidifying?
couldn't we be acidifying?
couldn't you be acidifying?
couldn't they be acidifying? 	couldn't I have acidified?
couldn't you have acidified?
couldn't she have acidified?
couldn't we have acidified?
couldn't you have acidified?
couldn't they have acidified? 	couldn't I have been acidifying?
couldn't you have been acidifying?
couldn't she have been acidifying?
couldn't we have been acidifying?
couldn't you have been acidifying?
couldn't they have been acidifying?