can window
Verbo regular: window - windowed- windowed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can window
you can window
she can window
we can window
you can window
they can window 	I can be windowing
you can be windowing
she can be windowing
we can be windowing
you can be windowing
they can be windowing	I can have windowed
you can have windowed
she can have windowed
we can have windowed
you can have windowed
they can have windowed	I can have been windowing
you can have been windowing
she can have been windowing
we can have been windowing
you can have been windowing
they can have been windowing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I cannot window
you cannot window
she cannot window
we cannot window
you cannot window
they cannot window 	I cannot be windowing
you cannot be windowing
she cannot be windowing
we cannot be windowing
you cannot be windowing
they cannot be windowing	I cannot have windowed
you cannot have windowed
she cannot have windowed
we cannot have windowed
you cannot have windowed
they cannot have windowed	I cannot have been windowing
you cannot have been windowing
she cannot have been windowing
we cannot have been windowing
you cannot have been windowing
they cannot have been windowing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I window?
can you window?
can she window?
can we window?
can you window?
can they window? 	can I be windowing?
can you be windowing?
can she be windowing?
can we be windowing?
can you be windowing?
can they be windowing? 	can I have windowed?
can you have windowed?
can she have windowed?
can we have windowed?
can you have windowed?
can they have windowed? 	can I have been windowing?
can you have been windowing?
can she have been windowing?
can we have been windowing?
can you have been windowing?
can they have been windowing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I not window?
can you not window?
can she not window?
can we not window?
can you not window?
can they not window? 	can I not be windowing?
can you not be windowing?
can she not be windowing?
can we not be windowing?
can you not be windowing?
can they not be windowing? 	can I not have windowed?
can you not have windowed?
can she not have windowed?
can we not have windowed?
can you not have windowed?
can they not have windowed? 	can I not have been windowing?
can you not have been windowing?
can she not have been windowing?
can we not have been windowing?
can you not have been windowing?
can they not have been windowing?