can pipe
Verbo regular: pipe - piped- piped

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I can pipe
you can pipe
she can pipe
we can pipe
you can pipe
they can pipe 	I can be piping
you can be piping
she can be piping
we can be piping
you can be piping
they can be piping	I can have piped
you can have piped
she can have piped
we can have piped
you can have piped
they can have piped	I can have been piping
you can have been piping
she can have been piping
we can have been piping
you can have been piping
they can have been piping	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I cannot pipe
you cannot pipe
she cannot pipe
we cannot pipe
you cannot pipe
they cannot pipe 	I cannot be piping
you cannot be piping
she cannot be piping
we cannot be piping
you cannot be piping
they cannot be piping	I cannot have piped
you cannot have piped
she cannot have piped
we cannot have piped
you cannot have piped
they cannot have piped	I cannot have been piping
you cannot have been piping
she cannot have been piping
we cannot have been piping
you cannot have been piping
they cannot have been piping	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I pipe?
can you pipe?
can she pipe?
can we pipe?
can you pipe?
can they pipe? 	can I be piping?
can you be piping?
can she be piping?
can we be piping?
can you be piping?
can they be piping? 	can I have piped?
can you have piped?
can she have piped?
can we have piped?
can you have piped?
can they have piped? 	can I have been piping?
can you have been piping?
can she have been piping?
can we have been piping?
can you have been piping?
can they have been piping? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
can I not pipe?
can you not pipe?
can she not pipe?
can we not pipe?
can you not pipe?
can they not pipe? 	can I not be piping?
can you not be piping?
can she not be piping?
can we not be piping?
can you not be piping?
can they not be piping? 	can I not have piped?
can you not have piped?
can she not have piped?
can we not have piped?
can you not have piped?
can they not have piped? 	can I not have been piping?
can you not have been piping?
can she not have been piping?
can we not have been piping?
can you not have been piping?
can they not have been piping?