could shortwave
Verbe régulier : shortwave - shortwaved- shortwaved

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could shortwave
you could shortwave
she could shortwave
we could shortwave
you could shortwave
they could shortwave 	I could be shortwaving
you could be shortwaving
she could be shortwaving
we could be shortwaving
you could be shortwaving
they could be shortwaving	I could have shortwaved
you could have shortwaved
she could have shortwaved
we could have shortwaved
you could have shortwaved
they could have shortwaved	I could have been shortwaving
you could have been shortwaving
she could have been shortwaving
we could have been shortwaving
you could have been shortwaving
they could have been shortwaving	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't shortwave
you couldn't shortwave
she couldn't shortwave
we couldn't shortwave
you couldn't shortwave
they couldn't shortwave 	I couldn't be shortwaving
you couldn't be shortwaving
she couldn't be shortwaving
we couldn't be shortwaving
you couldn't be shortwaving
they couldn't be shortwaving	I couldn't have shortwaved
you couldn't have shortwaved
she couldn't have shortwaved
we couldn't have shortwaved
you couldn't have shortwaved
they couldn't have shortwaved	I couldn't have been shortwaving
you couldn't have been shortwaving
she couldn't have been shortwaving
we couldn't have been shortwaving
you couldn't have been shortwaving
they couldn't have been shortwaving	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I shortwave?
could you shortwave?
could she shortwave?
could we shortwave?
could you shortwave?
could they shortwave? 	could I be shortwaving?
could you be shortwaving?
could she be shortwaving?
could we be shortwaving?
could you be shortwaving?
could they be shortwaving? 	could I have shortwaved?
could you have shortwaved?
could she have shortwaved?
could we have shortwaved?
could you have shortwaved?
could they have shortwaved? 	could I have been shortwaving?
could you have been shortwaving?
could she have been shortwaving?
could we have been shortwaving?
could you have been shortwaving?
could they have been shortwaving? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I shortwave?
couldn't you shortwave?
couldn't she shortwave?
couldn't we shortwave?
couldn't you shortwave?
couldn't they shortwave? 	couldn't I be shortwaving?
couldn't you be shortwaving?
couldn't she be shortwaving?
couldn't we be shortwaving?
couldn't you be shortwaving?
couldn't they be shortwaving? 	couldn't I have shortwaved?
couldn't you have shortwaved?
couldn't she have shortwaved?
couldn't we have shortwaved?
couldn't you have shortwaved?
couldn't they have shortwaved? 	couldn't I have been shortwaving?
couldn't you have been shortwaving?
couldn't she have been shortwaving?
couldn't we have been shortwaving?
couldn't you have been shortwaving?
couldn't they have been shortwaving?