Conjugación del verbo inglés
COULD PIPE

Verbo regular: pipe - piped - piped

Afirmación

Forma simple	Forma con V-ing
I could pipe you could pipe he could pipe we could pipe you could pipe they could pipe	I could be piping you could be piping he could be piping we could be piping you could be piping they could be piping
Perfecto	Perfecto con V-ing
I could have piped you could have piped he 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 he could have been piping we could have been piping you could have been piping they could have been piping

Negación

Forma simple	Forma con V-ing
I couldn't pipe you couldn't pipe he couldn't pipe we couldn't pipe you couldn't pipe they couldn't pipe	I couldn't be piping you couldn't be piping he couldn't be piping we couldn't be piping you couldn't be piping they couldn't be piping
Perfecto	Perfecto con V-ing
I couldn't have piped you couldn't have piped he couldn't have piped we couldn't have piped you couldn't have piped they couldn't have piped	I couldn't have been piping you couldn't have been piping he couldn't have been piping we couldn't have been piping you couldn't have been piping they couldn't have been piping

Forma interrogativa

Forma simple	Forma con V-ing
could I pipe? could you pipe? could he pipe? could we pipe? could you pipe? could they pipe?	could I be piping? could you be piping? could he be piping? could we be piping? could you be piping? could they be piping?
Perfecto	Perfecto con V-ing
could I have piped? could you have piped? could he 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 he have been piping? could we have been piping? could you have been piping? could they have been piping?

Forma interro-negativa

Forma simple	Forma con V-ing
couldn't I pipe? couldn't you pipe? couldn't he pipe? couldn't we pipe? couldn't you pipe? couldn't they pipe?	couldn't I be piping? couldn't you be piping? couldn't he be piping? couldn't we be piping? couldn't you be piping? couldn't they be piping?
Perfecto	Perfecto con V-ing
couldn't I have piped? couldn't you have piped? couldn't he have piped? couldn't we have piped? couldn't you have piped? couldn't they have piped?	couldn't I have been piping? couldn't you have been piping? couldn't he have been piping? couldn't we have been piping? couldn't you have been piping? couldn't they have been piping?