could captain
Verbo regular: captain - captained- captained

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could captain
you could captain
he could captain
we could captain
you could captain
they could captain 	I could be captaining
you could be captaining
he could be captaining
we could be captaining
you could be captaining
they could be captaining	I could have captained
you could have captained
he could have captained
we could have captained
you could have captained
they could have captained	I could have been captaining
you could have been captaining
he could have been captaining
we could have been captaining
you could have been captaining
they could have been captaining	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I couldn't captain
you couldn't captain
he couldn't captain
we couldn't captain
you couldn't captain
they couldn't captain 	I couldn't be captaining
you couldn't be captaining
he couldn't be captaining
we couldn't be captaining
you couldn't be captaining
they couldn't be captaining	I couldn't have captained
you couldn't have captained
he couldn't have captained
we couldn't have captained
you couldn't have captained
they couldn't have captained	I couldn't have been captaining
you couldn't have been captaining
he couldn't have been captaining
we couldn't have been captaining
you couldn't have been captaining
they couldn't have been captaining	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I captain?
could you captain?
could he captain?
could we captain?
could you captain?
could they captain? 	could I be captaining?
could you be captaining?
could he be captaining?
could we be captaining?
could you be captaining?
could they be captaining? 	could I have captained?
could you have captained?
could he have captained?
could we have captained?
could you have captained?
could they have captained? 	could I have been captaining?
could you have been captaining?
could he have been captaining?
could we have been captaining?
could you have been captaining?
could they have been captaining? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
couldn't I captain?
couldn't you captain?
couldn't he captain?
couldn't we captain?
couldn't you captain?
couldn't they captain? 	couldn't I be captaining?
couldn't you be captaining?
couldn't he be captaining?
couldn't we be captaining?
couldn't you be captaining?
couldn't they be captaining? 	couldn't I have captained?
couldn't you have captained?
couldn't he have captained?
couldn't we have captained?
couldn't you have captained?
couldn't they have captained? 	couldn't I have been captaining?
couldn't you have been captaining?
couldn't he have been captaining?
couldn't we have been captaining?
couldn't you have been captaining?
couldn't they have been captaining?