could sibilate
Verbe régulier : sibilate - sibilated- sibilated
Traduction française : prononcer en sifflant - siffler 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could sibilate
you could sibilate
she could sibilate
we could sibilate
you could sibilate
they could sibilate 	I could be sibilating
you could be sibilating
she could be sibilating
we could be sibilating
you could be sibilating
they could be sibilating	I could have sibilated
you could have sibilated
she could have sibilated
we could have sibilated
you could have sibilated
they could have sibilated	I could have been sibilating
you could have been sibilating
she could have been sibilating
we could have been sibilating
you could have been sibilating
they could have been sibilating	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't sibilate
you couldn't sibilate
she couldn't sibilate
we couldn't sibilate
you couldn't sibilate
they couldn't sibilate 	I couldn't be sibilating
you couldn't be sibilating
she couldn't be sibilating
we couldn't be sibilating
you couldn't be sibilating
they couldn't be sibilating	I couldn't have sibilated
you couldn't have sibilated
she couldn't have sibilated
we couldn't have sibilated
you couldn't have sibilated
they couldn't have sibilated	I couldn't have been sibilating
you couldn't have been sibilating
she couldn't have been sibilating
we couldn't have been sibilating
you couldn't have been sibilating
they couldn't have been sibilating	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I sibilate?
could you sibilate?
could she sibilate?
could we sibilate?
could you sibilate?
could they sibilate? 	could I be sibilating?
could you be sibilating?
could she be sibilating?
could we be sibilating?
could you be sibilating?
could they be sibilating? 	could I have sibilated?
could you have sibilated?
could she have sibilated?
could we have sibilated?
could you have sibilated?
could they have sibilated? 	could I have been sibilating?
could you have been sibilating?
could she have been sibilating?
could we have been sibilating?
could you have been sibilating?
could they have been sibilating? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I sibilate?
couldn't you sibilate?
couldn't she sibilate?
couldn't we sibilate?
couldn't you sibilate?
couldn't they sibilate? 	couldn't I be sibilating?
couldn't you be sibilating?
couldn't she be sibilating?
couldn't we be sibilating?
couldn't you be sibilating?
couldn't they be sibilating? 	couldn't I have sibilated?
couldn't you have sibilated?
couldn't she have sibilated?
couldn't we have sibilated?
couldn't you have sibilated?
couldn't they have sibilated? 	couldn't I have been sibilating?
couldn't you have been sibilating?
couldn't she have been sibilating?
couldn't we have been sibilating?
couldn't you have been sibilating?
couldn't they have been sibilating?