can choir
Verbo regular: choir - choired- choired

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

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I cannot choir
you cannot choir
she cannot choir
we cannot choir
you cannot choir
they cannot choir 	I cannot be choiring
you cannot be choiring
she cannot be choiring
we cannot be choiring
you cannot be choiring
they cannot be choiring	I cannot have choired
you cannot have choired
she cannot have choired
we cannot have choired
you cannot have choired
they cannot have choired	I cannot have been choiring
you cannot have been choiring
she cannot have been choiring
we cannot have been choiring
you cannot have been choiring
they cannot have been choiring	

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

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I not choir?
can you not choir?
can she not choir?
can we not choir?
can you not choir?
can they not choir? 	can I not be choiring?
can you not be choiring?
can she not be choiring?
can we not be choiring?
can you not be choiring?
can they not be choiring? 	can I not have choired?
can you not have choired?
can she not have choired?
can we not have choired?
can you not have choired?
can they not have choired? 	can I not have been choiring?
can you not have been choiring?
can she not have been choiring?
can we not have been choiring?
can you not have been choiring?
can they not have been choiring?