Conjugação do verbo inglês
COULD PIPE

Verbo regular: pipe - piped - piped

Afirmação

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

Negação

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

Forma interrogativa

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

Forma interro-Negação

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