could clash
Verbo regular: clash - clashed- clashed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could clash
you could clash
he could clash
we could clash
you could clash
they could clash 	I could be clashing
you could be clashing
he could be clashing
we could be clashing
you could be clashing
they could be clashing	I could have clashed
you could have clashed
he could have clashed
we could have clashed
you could have clashed
they could have clashed	I could have been clashing
you could have been clashing
he could have been clashing
we could have been clashing
you could have been clashing
they could have been clashing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't clash
you couldn't clash
he couldn't clash
we couldn't clash
you couldn't clash
they couldn't clash 	I couldn't be clashing
you couldn't be clashing
he couldn't be clashing
we couldn't be clashing
you couldn't be clashing
they couldn't be clashing	I couldn't have clashed
you couldn't have clashed
he couldn't have clashed
we couldn't have clashed
you couldn't have clashed
they couldn't have clashed	I couldn't have been clashing
you couldn't have been clashing
he couldn't have been clashing
we couldn't have been clashing
you couldn't have been clashing
they couldn't have been clashing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I clash?
could you clash?
could he clash?
could we clash?
could you clash?
could they clash? 	could I be clashing?
could you be clashing?
could he be clashing?
could we be clashing?
could you be clashing?
could they be clashing? 	could I have clashed?
could you have clashed?
could he have clashed?
could we have clashed?
could you have clashed?
could they have clashed? 	could I have been clashing?
could you have been clashing?
could he have been clashing?
could we have been clashing?
could you have been clashing?
could they have been clashing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I clash?
couldn't you clash?
couldn't he clash?
couldn't we clash?
couldn't you clash?
couldn't they clash? 	couldn't I be clashing?
couldn't you be clashing?
couldn't he be clashing?
couldn't we be clashing?
couldn't you be clashing?
couldn't they be clashing? 	couldn't I have clashed?
couldn't you have clashed?
couldn't he have clashed?
couldn't we have clashed?
couldn't you have clashed?
couldn't they have clashed? 	couldn't I have been clashing?
couldn't you have been clashing?
couldn't he have been clashing?
couldn't we have been clashing?
couldn't you have been clashing?
couldn't they have been clashing?