could chap
Verbo regular: chap - chapped- chapped

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could chap
you could chap
he could chap
we could chap
you could chap
they could chap 	I could be chapping
you could be chapping
he could be chapping
we could be chapping
you could be chapping
they could be chapping	I could have chapped
you could have chapped
he could have chapped
we could have chapped
you could have chapped
they could have chapped	I could have been chapping
you could have been chapping
he could have been chapping
we could have been chapping
you could have been chapping
they could have been chapping	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't chap
you couldn't chap
he couldn't chap
we couldn't chap
you couldn't chap
they couldn't chap 	I couldn't be chapping
you couldn't be chapping
he couldn't be chapping
we couldn't be chapping
you couldn't be chapping
they couldn't be chapping	I couldn't have chapped
you couldn't have chapped
he couldn't have chapped
we couldn't have chapped
you couldn't have chapped
they couldn't have chapped	I couldn't have been chapping
you couldn't have been chapping
he couldn't have been chapping
we couldn't have been chapping
you couldn't have been chapping
they couldn't have been chapping	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I chap?
could you chap?
could he chap?
could we chap?
could you chap?
could they chap? 	could I be chapping?
could you be chapping?
could he be chapping?
could we be chapping?
could you be chapping?
could they be chapping? 	could I have chapped?
could you have chapped?
could he have chapped?
could we have chapped?
could you have chapped?
could they have chapped? 	could I have been chapping?
could you have been chapping?
could he have been chapping?
could we have been chapping?
could you have been chapping?
could they have been chapping? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I chap?
couldn't you chap?
couldn't he chap?
couldn't we chap?
couldn't you chap?
couldn't they chap? 	couldn't I be chapping?
couldn't you be chapping?
couldn't he be chapping?
couldn't we be chapping?
couldn't you be chapping?
couldn't they be chapping? 	couldn't I have chapped?
couldn't you have chapped?
couldn't he have chapped?
couldn't we have chapped?
couldn't you have chapped?
couldn't they have chapped? 	couldn't I have been chapping?
couldn't you have been chapping?
couldn't he have been chapping?
couldn't we have been chapping?
couldn't you have been chapping?
couldn't they have been chapping?