could rosin
Verbe régulier : rosin - rosined- rosined
Traduction française : traiter à la colophane - enduire de colophane 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could rosin
you could rosin
she could rosin
we could rosin
you could rosin
they could rosin 	I could be rosining
you could be rosining
she could be rosining
we could be rosining
you could be rosining
they could be rosining	I could have rosined
you could have rosined
she could have rosined
we could have rosined
you could have rosined
they could have rosined	I could have been rosining
you could have been rosining
she could have been rosining
we could have been rosining
you could have been rosining
they could have been rosining	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't rosin
you couldn't rosin
she couldn't rosin
we couldn't rosin
you couldn't rosin
they couldn't rosin 	I couldn't be rosining
you couldn't be rosining
she couldn't be rosining
we couldn't be rosining
you couldn't be rosining
they couldn't be rosining	I couldn't have rosined
you couldn't have rosined
she couldn't have rosined
we couldn't have rosined
you couldn't have rosined
they couldn't have rosined	I couldn't have been rosining
you couldn't have been rosining
she couldn't have been rosining
we couldn't have been rosining
you couldn't have been rosining
they couldn't have been rosining	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I rosin?
could you rosin?
could she rosin?
could we rosin?
could you rosin?
could they rosin? 	could I be rosining?
could you be rosining?
could she be rosining?
could we be rosining?
could you be rosining?
could they be rosining? 	could I have rosined?
could you have rosined?
could she have rosined?
could we have rosined?
could you have rosined?
could they have rosined? 	could I have been rosining?
could you have been rosining?
could she have been rosining?
could we have been rosining?
could you have been rosining?
could they have been rosining? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I rosin?
couldn't you rosin?
couldn't she rosin?
couldn't we rosin?
couldn't you rosin?
couldn't they rosin? 	couldn't I be rosining?
couldn't you be rosining?
couldn't she be rosining?
couldn't we be rosining?
couldn't you be rosining?
couldn't they be rosining? 	couldn't I have rosined?
couldn't you have rosined?
couldn't she have rosined?
couldn't we have rosined?
couldn't you have rosined?
couldn't they have rosined? 	couldn't I have been rosining?
couldn't you have been rosining?
couldn't she have been rosining?
couldn't we have been rosining?
couldn't you have been rosining?
couldn't they have been rosining?