could sailplane
Verbe régulier : sailplane - sailplaned- sailplaned

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could sailplane
you could sailplane
she could sailplane
we could sailplane
you could sailplane
they could sailplane 	I could be sailplaning
you could be sailplaning
she could be sailplaning
we could be sailplaning
you could be sailplaning
they could be sailplaning	I could have sailplaned
you could have sailplaned
she could have sailplaned
we could have sailplaned
you could have sailplaned
they could have sailplaned	I could have been sailplaning
you could have been sailplaning
she could have been sailplaning
we could have been sailplaning
you could have been sailplaning
they could have been sailplaning	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't sailplane
you couldn't sailplane
she couldn't sailplane
we couldn't sailplane
you couldn't sailplane
they couldn't sailplane 	I couldn't be sailplaning
you couldn't be sailplaning
she couldn't be sailplaning
we couldn't be sailplaning
you couldn't be sailplaning
they couldn't be sailplaning	I couldn't have sailplaned
you couldn't have sailplaned
she couldn't have sailplaned
we couldn't have sailplaned
you couldn't have sailplaned
they couldn't have sailplaned	I couldn't have been sailplaning
you couldn't have been sailplaning
she couldn't have been sailplaning
we couldn't have been sailplaning
you couldn't have been sailplaning
they couldn't have been sailplaning	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I sailplane?
could you sailplane?
could she sailplane?
could we sailplane?
could you sailplane?
could they sailplane? 	could I be sailplaning?
could you be sailplaning?
could she be sailplaning?
could we be sailplaning?
could you be sailplaning?
could they be sailplaning? 	could I have sailplaned?
could you have sailplaned?
could she have sailplaned?
could we have sailplaned?
could you have sailplaned?
could they have sailplaned? 	could I have been sailplaning?
could you have been sailplaning?
could she have been sailplaning?
could we have been sailplaning?
could you have been sailplaning?
could they have been sailplaning? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I sailplane?
couldn't you sailplane?
couldn't she sailplane?
couldn't we sailplane?
couldn't you sailplane?
couldn't they sailplane? 	couldn't I be sailplaning?
couldn't you be sailplaning?
couldn't she be sailplaning?
couldn't we be sailplaning?
couldn't you be sailplaning?
couldn't they be sailplaning? 	couldn't I have sailplaned?
couldn't you have sailplaned?
couldn't she have sailplaned?
couldn't we have sailplaned?
couldn't you have sailplaned?
couldn't they have sailplaned? 	couldn't I have been sailplaning?
couldn't you have been sailplaning?
couldn't she have been sailplaning?
couldn't we have been sailplaning?
couldn't you have been sailplaning?
couldn't they have been sailplaning?