could choir
Verbo regular: choir - choired- choired

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could choir
you could choir
he could choir
we could choir
you could choir
they could choir 	I could be choiring
you could be choiring
he could be choiring
we could be choiring
you could be choiring
they could be choiring	I could have choired
you could have choired
he could have choired
we could have choired
you could have choired
they could have choired	I could have been choiring
you could have been choiring
he could have been choiring
we could have been choiring
you could have been choiring
they could have been choiring	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I couldn't choir
you couldn't choir
he couldn't choir
we couldn't choir
you couldn't choir
they couldn't choir 	I couldn't be choiring
you couldn't be choiring
he couldn't be choiring
we couldn't be choiring
you couldn't be choiring
they couldn't be choiring	I couldn't have choired
you couldn't have choired
he couldn't have choired
we couldn't have choired
you couldn't have choired
they couldn't have choired	I couldn't have been choiring
you couldn't have been choiring
he couldn't have been choiring
we couldn't have been choiring
you couldn't have been choiring
they couldn't have been choiring	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I choir?
could you choir?
could he choir?
could we choir?
could you choir?
could they choir? 	could I be choiring?
could you be choiring?
could he be choiring?
could we be choiring?
could you be choiring?
could they be choiring? 	could I have choired?
could you have choired?
could he have choired?
could we have choired?
could you have choired?
could they have choired? 	could I have been choiring?
could you have been choiring?
could he have been choiring?
could we have been choiring?
could you have been choiring?
could they have been choiring? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
couldn't I choir?
couldn't you choir?
couldn't he choir?
couldn't we choir?
couldn't you choir?
couldn't they choir? 	couldn't I be choiring?
couldn't you be choiring?
couldn't he be choiring?
couldn't we be choiring?
couldn't you be choiring?
couldn't they be choiring? 	couldn't I have choired?
couldn't you have choired?
couldn't he have choired?
couldn't we have choired?
couldn't you have choired?
couldn't they have choired? 	couldn't I have been choiring?
couldn't you have been choiring?
couldn't he have been choiring?
couldn't we have been choiring?
couldn't you have been choiring?
couldn't they have been choiring?