could orbit
Verbo regular: orbit - orbited- orbited

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could orbit
you could orbit
he could orbit
we could orbit
you could orbit
they could orbit 	I could be orbiting
you could be orbiting
he could be orbiting
we could be orbiting
you could be orbiting
they could be orbiting	I could have orbited
you could have orbited
he could have orbited
we could have orbited
you could have orbited
they could have orbited	I could have been orbiting
you could have been orbiting
he could have been orbiting
we could have been orbiting
you could have been orbiting
they could have been orbiting	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't orbit
you couldn't orbit
he couldn't orbit
we couldn't orbit
you couldn't orbit
they couldn't orbit 	I couldn't be orbiting
you couldn't be orbiting
he couldn't be orbiting
we couldn't be orbiting
you couldn't be orbiting
they couldn't be orbiting	I couldn't have orbited
you couldn't have orbited
he couldn't have orbited
we couldn't have orbited
you couldn't have orbited
they couldn't have orbited	I couldn't have been orbiting
you couldn't have been orbiting
he couldn't have been orbiting
we couldn't have been orbiting
you couldn't have been orbiting
they couldn't have been orbiting	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I orbit?
could you orbit?
could he orbit?
could we orbit?
could you orbit?
could they orbit? 	could I be orbiting?
could you be orbiting?
could he be orbiting?
could we be orbiting?
could you be orbiting?
could they be orbiting? 	could I have orbited?
could you have orbited?
could he have orbited?
could we have orbited?
could you have orbited?
could they have orbited? 	could I have been orbiting?
could you have been orbiting?
could he have been orbiting?
could we have been orbiting?
could you have been orbiting?
could they have been orbiting? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I orbit?
couldn't you orbit?
couldn't he orbit?
couldn't we orbit?
couldn't you orbit?
couldn't they orbit? 	couldn't I be orbiting?
couldn't you be orbiting?
couldn't he be orbiting?
couldn't we be orbiting?
couldn't you be orbiting?
couldn't they be orbiting? 	couldn't I have orbited?
couldn't you have orbited?
couldn't he have orbited?
couldn't we have orbited?
couldn't you have orbited?
couldn't they have orbited? 	couldn't I have been orbiting?
couldn't you have been orbiting?
couldn't he have been orbiting?
couldn't we have been orbiting?
couldn't you have been orbiting?
couldn't they have been orbiting?