could metastasise
Verbe régulier : metastasise - metastasised- metastasised

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could metastasise
you could metastasise
he could metastasise
we could metastasise
you could metastasise
they could metastasise 	I could be metastasising
you could be metastasising
he could be metastasising
we could be metastasising
you could be metastasising
they could be metastasising	I could have metastasised
you could have metastasised
he could have metastasised
we could have metastasised
you could have metastasised
they could have metastasised	I could have been metastasising
you could have been metastasising
he could have been metastasising
we could have been metastasising
you could have been metastasising
they could have been metastasising	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't metastasise
you couldn't metastasise
he couldn't metastasise
we couldn't metastasise
you couldn't metastasise
they couldn't metastasise 	I couldn't be metastasising
you couldn't be metastasising
he couldn't be metastasising
we couldn't be metastasising
you couldn't be metastasising
they couldn't be metastasising	I couldn't have metastasised
you couldn't have metastasised
he couldn't have metastasised
we couldn't have metastasised
you couldn't have metastasised
they couldn't have metastasised	I couldn't have been metastasising
you couldn't have been metastasising
he couldn't have been metastasising
we couldn't have been metastasising
you couldn't have been metastasising
they couldn't have been metastasising	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I metastasise?
could you metastasise?
could he metastasise?
could we metastasise?
could you metastasise?
could they metastasise? 	could I be metastasising?
could you be metastasising?
could he be metastasising?
could we be metastasising?
could you be metastasising?
could they be metastasising? 	could I have metastasised?
could you have metastasised?
could he have metastasised?
could we have metastasised?
could you have metastasised?
could they have metastasised? 	could I have been metastasising?
could you have been metastasising?
could he have been metastasising?
could we have been metastasising?
could you have been metastasising?
could they have been metastasising? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I metastasise?
couldn't you metastasise?
couldn't he metastasise?
couldn't we metastasise?
couldn't you metastasise?
couldn't they metastasise? 	couldn't I be metastasising?
couldn't you be metastasising?
couldn't he be metastasising?
couldn't we be metastasising?
couldn't you be metastasising?
couldn't they be metastasising? 	couldn't I have metastasised?
couldn't you have metastasised?
couldn't he have metastasised?
couldn't we have metastasised?
couldn't you have metastasised?
couldn't they have metastasised? 	couldn't I have been metastasising?
couldn't you have been metastasising?
couldn't he have been metastasising?
couldn't we have been metastasising?
couldn't you have been metastasising?
couldn't they have been metastasising?