could roil
Verbe régulier : roil - roiled- roiled

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could roil
you could roil
she could roil
we could roil
you could roil
they could roil 	I could be roiling
you could be roiling
she could be roiling
we could be roiling
you could be roiling
they could be roiling	I could have roiled
you could have roiled
she could have roiled
we could have roiled
you could have roiled
they could have roiled	I could have been roiling
you could have been roiling
she could have been roiling
we could have been roiling
you could have been roiling
they could have been roiling	

Négation 	
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I couldn't roil
you couldn't roil
she couldn't roil
we couldn't roil
you couldn't roil
they couldn't roil 	I couldn't be roiling
you couldn't be roiling
she couldn't be roiling
we couldn't be roiling
you couldn't be roiling
they couldn't be roiling	I couldn't have roiled
you couldn't have roiled
she couldn't have roiled
we couldn't have roiled
you couldn't have roiled
they couldn't have roiled	I couldn't have been roiling
you couldn't have been roiling
she couldn't have been roiling
we couldn't have been roiling
you couldn't have been roiling
they couldn't have been roiling	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I roil?
could you roil?
could she roil?
could we roil?
could you roil?
could they roil? 	could I be roiling?
could you be roiling?
could she be roiling?
could we be roiling?
could you be roiling?
could they be roiling? 	could I have roiled?
could you have roiled?
could she have roiled?
could we have roiled?
could you have roiled?
could they have roiled? 	could I have been roiling?
could you have been roiling?
could she have been roiling?
could we have been roiling?
could you have been roiling?
could they have been roiling? 	

Forme interro-négative 	
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couldn't I roil?
couldn't you roil?
couldn't she roil?
couldn't we roil?
couldn't you roil?
couldn't they roil? 	couldn't I be roiling?
couldn't you be roiling?
couldn't she be roiling?
couldn't we be roiling?
couldn't you be roiling?
couldn't they be roiling? 	couldn't I have roiled?
couldn't you have roiled?
couldn't she have roiled?
couldn't we have roiled?
couldn't you have roiled?
couldn't they have roiled? 	couldn't I have been roiling?
couldn't you have been roiling?
couldn't she have been roiling?
couldn't we have been roiling?
couldn't you have been roiling?
couldn't they have been roiling?