could sphere
Verbe régulier : sphere - sphered- sphered

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could sphere
you could sphere
she could sphere
we could sphere
you could sphere
they could sphere 	I could be sphering
you could be sphering
she could be sphering
we could be sphering
you could be sphering
they could be sphering	I could have sphered
you could have sphered
she could have sphered
we could have sphered
you could have sphered
they could have sphered	I could have been sphering
you could have been sphering
she could have been sphering
we could have been sphering
you could have been sphering
they could have been sphering	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could not sphere
you could not sphere
she could not sphere
we could not sphere
you could not sphere
they could not sphere 	I could not be sphering
you could not be sphering
she could not be sphering
we could not be sphering
you could not be sphering
they could not be sphering	I could not have sphered
you could not have sphered
she could not have sphered
we could not have sphered
you could not have sphered
they could not have sphered	I could not have been sphering
you could not have been sphering
she could not have been sphering
we could not have been sphering
you could not have been sphering
they could not have been sphering	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I sphere?
could you sphere?
could she sphere?
could we sphere?
could you sphere?
could they sphere? 	could I be sphering?
could you be sphering?
could she be sphering?
could we be sphering?
could you be sphering?
could they be sphering? 	could I have sphered?
could you have sphered?
could she have sphered?
could we have sphered?
could you have sphered?
could they have sphered? 	could I have been sphering?
could you have been sphering?
could she have been sphering?
could we have been sphering?
could you have been sphering?
could they have been sphering? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I not sphere?
could you not sphere?
could she not sphere?
could we not sphere?
could you not sphere?
could they not sphere? 	could I not be sphering?
could you not be sphering?
could she not be sphering?
could we not be sphering?
could you not be sphering?
could they not be sphering? 	could I not have sphered?
could you not have sphered?
could she not have sphered?
could we not have sphered?
could you not have sphered?
could they not have sphered? 	could I not have been sphering?
could you not have been sphering?
could she not have been sphering?
could we not have been sphering?
could you not have been sphering?
could they not have been sphering?