could screak
Verbe régulier : screak - screaked- screaked

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could screak
you could screak
he could screak
we could screak
you could screak
they could screak 	I could be screaking
you could be screaking
he could be screaking
we could be screaking
you could be screaking
they could be screaking	I could have screaked
you could have screaked
he could have screaked
we could have screaked
you could have screaked
they could have screaked	I could have been screaking
you could have been screaking
he could have been screaking
we could have been screaking
you could have been screaking
they could have been screaking	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't screak
you couldn't screak
he couldn't screak
we couldn't screak
you couldn't screak
they couldn't screak 	I couldn't be screaking
you couldn't be screaking
he couldn't be screaking
we couldn't be screaking
you couldn't be screaking
they couldn't be screaking	I couldn't have screaked
you couldn't have screaked
he couldn't have screaked
we couldn't have screaked
you couldn't have screaked
they couldn't have screaked	I couldn't have been screaking
you couldn't have been screaking
he couldn't have been screaking
we couldn't have been screaking
you couldn't have been screaking
they couldn't have been screaking	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I screak?
could you screak?
could he screak?
could we screak?
could you screak?
could they screak? 	could I be screaking?
could you be screaking?
could he be screaking?
could we be screaking?
could you be screaking?
could they be screaking? 	could I have screaked?
could you have screaked?
could he have screaked?
could we have screaked?
could you have screaked?
could they have screaked? 	could I have been screaking?
could you have been screaking?
could he have been screaking?
could we have been screaking?
could you have been screaking?
could they have been screaking? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I screak?
couldn't you screak?
couldn't he screak?
couldn't we screak?
couldn't you screak?
couldn't they screak? 	couldn't I be screaking?
couldn't you be screaking?
couldn't he be screaking?
couldn't we be screaking?
couldn't you be screaking?
couldn't they be screaking? 	couldn't I have screaked?
couldn't you have screaked?
couldn't he have screaked?
couldn't we have screaked?
couldn't you have screaked?
couldn't they have screaked? 	couldn't I have been screaking?
couldn't you have been screaking?
couldn't he have been screaking?
couldn't we have been screaking?
couldn't you have been screaking?
couldn't they have been screaking?