could wash
Verbo regular: wash - washed- washed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could wash
you could wash
she could wash
we could wash
you could wash
they could wash 	I could be washing
you could be washing
she could be washing
we could be washing
you could be washing
they could be washing	I could have washed
you could have washed
she could have washed
we could have washed
you could have washed
they could have washed	I could have been washing
you could have been washing
she could have been washing
we could have been washing
you could have been washing
they could have been washing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't wash
you couldn't wash
she couldn't wash
we couldn't wash
you couldn't wash
they couldn't wash 	I couldn't be washing
you couldn't be washing
she couldn't be washing
we couldn't be washing
you couldn't be washing
they couldn't be washing	I couldn't have washed
you couldn't have washed
she couldn't have washed
we couldn't have washed
you couldn't have washed
they couldn't have washed	I couldn't have been washing
you couldn't have been washing
she couldn't have been washing
we couldn't have been washing
you couldn't have been washing
they couldn't have been washing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I wash?
could you wash?
could she wash?
could we wash?
could you wash?
could they wash? 	could I be washing?
could you be washing?
could she be washing?
could we be washing?
could you be washing?
could they be washing? 	could I have washed?
could you have washed?
could she have washed?
could we have washed?
could you have washed?
could they have washed? 	could I have been washing?
could you have been washing?
could she have been washing?
could we have been washing?
could you have been washing?
could they have been washing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I wash?
couldn't you wash?
couldn't she wash?
couldn't we wash?
couldn't you wash?
couldn't they wash? 	couldn't I be washing?
couldn't you be washing?
couldn't she be washing?
couldn't we be washing?
couldn't you be washing?
couldn't they be washing? 	couldn't I have washed?
couldn't you have washed?
couldn't she have washed?
couldn't we have washed?
couldn't you have washed?
couldn't they have washed? 	couldn't I have been washing?
couldn't you have been washing?
couldn't she have been washing?
couldn't we have been washing?
couldn't you have been washing?
couldn't they have been washing?