could mortise
Verbo regular: mortise - mortised- mortised

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could mortise
you could mortise
he could mortise
we could mortise
you could mortise
they could mortise 	I could be mortising
you could be mortising
he could be mortising
we could be mortising
you could be mortising
they could be mortising	I could have mortised
you could have mortised
he could have mortised
we could have mortised
you could have mortised
they could have mortised	I could have been mortising
you could have been mortising
he could have been mortising
we could have been mortising
you could have been mortising
they could have been mortising	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't mortise
you couldn't mortise
he couldn't mortise
we couldn't mortise
you couldn't mortise
they couldn't mortise 	I couldn't be mortising
you couldn't be mortising
he couldn't be mortising
we couldn't be mortising
you couldn't be mortising
they couldn't be mortising	I couldn't have mortised
you couldn't have mortised
he couldn't have mortised
we couldn't have mortised
you couldn't have mortised
they couldn't have mortised	I couldn't have been mortising
you couldn't have been mortising
he couldn't have been mortising
we couldn't have been mortising
you couldn't have been mortising
they couldn't have been mortising	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I mortise?
could you mortise?
could he mortise?
could we mortise?
could you mortise?
could they mortise? 	could I be mortising?
could you be mortising?
could he be mortising?
could we be mortising?
could you be mortising?
could they be mortising? 	could I have mortised?
could you have mortised?
could he have mortised?
could we have mortised?
could you have mortised?
could they have mortised? 	could I have been mortising?
could you have been mortising?
could he have been mortising?
could we have been mortising?
could you have been mortising?
could they have been mortising? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I mortise?
couldn't you mortise?
couldn't he mortise?
couldn't we mortise?
couldn't you mortise?
couldn't they mortise? 	couldn't I be mortising?
couldn't you be mortising?
couldn't he be mortising?
couldn't we be mortising?
couldn't you be mortising?
couldn't they be mortising? 	couldn't I have mortised?
couldn't you have mortised?
couldn't he have mortised?
couldn't we have mortised?
couldn't you have mortised?
couldn't they have mortised? 	couldn't I have been mortising?
couldn't you have been mortising?
couldn't he have been mortising?
couldn't we have been mortising?
couldn't you have been mortising?
couldn't they have been mortising?