can key
Verbo regular: key - keyed- keyed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can key
you can key
she can key
we can key
you can key
they can key 	I can be keying
you can be keying
she can be keying
we can be keying
you can be keying
they can be keying	I can have keyed
you can have keyed
she can have keyed
we can have keyed
you can have keyed
they can have keyed	I can have been keying
you can have been keying
she can have been keying
we can have been keying
you can have been keying
they can have been keying	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I cannot key
you cannot key
she cannot key
we cannot key
you cannot key
they cannot key 	I cannot be keying
you cannot be keying
she cannot be keying
we cannot be keying
you cannot be keying
they cannot be keying	I cannot have keyed
you cannot have keyed
she cannot have keyed
we cannot have keyed
you cannot have keyed
they cannot have keyed	I cannot have been keying
you cannot have been keying
she cannot have been keying
we cannot have been keying
you cannot have been keying
they cannot have been keying	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I key?
can you key?
can she key?
can we key?
can you key?
can they key? 	can I be keying?
can you be keying?
can she be keying?
can we be keying?
can you be keying?
can they be keying? 	can I have keyed?
can you have keyed?
can she have keyed?
can we have keyed?
can you have keyed?
can they have keyed? 	can I have been keying?
can you have been keying?
can she have been keying?
can we have been keying?
can you have been keying?
can they have been keying? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I not key?
can you not key?
can she not key?
can we not key?
can you not key?
can they not key? 	can I not be keying?
can you not be keying?
can she not be keying?
can we not be keying?
can you not be keying?
can they not be keying? 	can I not have keyed?
can you not have keyed?
can she not have keyed?
can we not have keyed?
can you not have keyed?
can they not have keyed? 	can I not have been keying?
can you not have been keying?
can she not have been keying?
can we not have been keying?
can you not have been keying?
can they not have been keying?