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 could not sailplane
you could not sailplane
she could not sailplane
we could not sailplane
you could not sailplane
they could not sailplane 	I could not be sailplaning
you could not be sailplaning
she could not be sailplaning
we could not be sailplaning
you could not be sailplaning
they could not be sailplaning	I could not have sailplaned
you could not have sailplaned
she could not have sailplaned
we could not have sailplaned
you could not have sailplaned
they could not have sailplaned	I could not have been sailplaning
you could not have been sailplaning
she could not have been sailplaning
we could not have been sailplaning
you could not have been sailplaning
they could not 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 	
could I not sailplane?
could you not sailplane?
could she not sailplane?
could we not sailplane?
could you not sailplane?
could they not sailplane? 	could I not be sailplaning?
could you not be sailplaning?
could she not be sailplaning?
could we not be sailplaning?
could you not be sailplaning?
could they not be sailplaning? 	could I not have sailplaned?
could you not have sailplaned?
could she not have sailplaned?
could we not have sailplaned?
could you not have sailplaned?
could they not have sailplaned? 	could I not have been sailplaning?
could you not have been sailplaning?
could she not have been sailplaning?
could we not have been sailplaning?
could you not have been sailplaning?
could they not have been sailplaning?