could couple
Verbo regular: couple - coupled- coupled

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could couple
you could couple
he could couple
we could couple
you could couple
they could couple 	I could be coupling
you could be coupling
he could be coupling
we could be coupling
you could be coupling
they could be coupling	I could have coupled
you could have coupled
he could have coupled
we could have coupled
you could have coupled
they could have coupled	I could have been coupling
you could have been coupling
he could have been coupling
we could have been coupling
you could have been coupling
they could have been coupling	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I couldn't couple
you couldn't couple
he couldn't couple
we couldn't couple
you couldn't couple
they couldn't couple 	I couldn't be coupling
you couldn't be coupling
he couldn't be coupling
we couldn't be coupling
you couldn't be coupling
they couldn't be coupling	I couldn't have coupled
you couldn't have coupled
he couldn't have coupled
we couldn't have coupled
you couldn't have coupled
they couldn't have coupled	I couldn't have been coupling
you couldn't have been coupling
he couldn't have been coupling
we couldn't have been coupling
you couldn't have been coupling
they couldn't have been coupling	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I couple?
could you couple?
could he couple?
could we couple?
could you couple?
could they couple? 	could I be coupling?
could you be coupling?
could he be coupling?
could we be coupling?
could you be coupling?
could they be coupling? 	could I have coupled?
could you have coupled?
could he have coupled?
could we have coupled?
could you have coupled?
could they have coupled? 	could I have been coupling?
could you have been coupling?
could he have been coupling?
could we have been coupling?
could you have been coupling?
could they have been coupling? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
couldn't I couple?
couldn't you couple?
couldn't he couple?
couldn't we couple?
couldn't you couple?
couldn't they couple? 	couldn't I be coupling?
couldn't you be coupling?
couldn't he be coupling?
couldn't we be coupling?
couldn't you be coupling?
couldn't they be coupling? 	couldn't I have coupled?
couldn't you have coupled?
couldn't he have coupled?
couldn't we have coupled?
couldn't you have coupled?
couldn't they have coupled? 	couldn't I have been coupling?
couldn't you have been coupling?
couldn't he have been coupling?
couldn't we have been coupling?
couldn't you have been coupling?
couldn't they have been coupling?