could summersault
Verbe régulier : summersault - summersaulted- summersaulted

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could summersault
you could summersault
she could summersault
we could summersault
you could summersault
they could summersault 	I could be summersaulting
you could be summersaulting
she could be summersaulting
we could be summersaulting
you could be summersaulting
they could be summersaulting	I could have summersaulted
you could have summersaulted
she could have summersaulted
we could have summersaulted
you could have summersaulted
they could have summersaulted	I could have been summersaulting
you could have been summersaulting
she could have been summersaulting
we could have been summersaulting
you could have been summersaulting
they could have been summersaulting	

Négation 	
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I couldn't summersault
you couldn't summersault
she couldn't summersault
we couldn't summersault
you couldn't summersault
they couldn't summersault 	I couldn't be summersaulting
you couldn't be summersaulting
she couldn't be summersaulting
we couldn't be summersaulting
you couldn't be summersaulting
they couldn't be summersaulting	I couldn't have summersaulted
you couldn't have summersaulted
she couldn't have summersaulted
we couldn't have summersaulted
you couldn't have summersaulted
they couldn't have summersaulted	I couldn't have been summersaulting
you couldn't have been summersaulting
she couldn't have been summersaulting
we couldn't have been summersaulting
you couldn't have been summersaulting
they couldn't have been summersaulting	

Forme interrogative 	
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could I summersault?
could you summersault?
could she summersault?
could we summersault?
could you summersault?
could they summersault? 	could I be summersaulting?
could you be summersaulting?
could she be summersaulting?
could we be summersaulting?
could you be summersaulting?
could they be summersaulting? 	could I have summersaulted?
could you have summersaulted?
could she have summersaulted?
could we have summersaulted?
could you have summersaulted?
could they have summersaulted? 	could I have been summersaulting?
could you have been summersaulting?
could she have been summersaulting?
could we have been summersaulting?
could you have been summersaulting?
could they have been summersaulting? 	

Forme interro-négative 	
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couldn't I summersault?
couldn't you summersault?
couldn't she summersault?
couldn't we summersault?
couldn't you summersault?
couldn't they summersault? 	couldn't I be summersaulting?
couldn't you be summersaulting?
couldn't she be summersaulting?
couldn't we be summersaulting?
couldn't you be summersaulting?
couldn't they be summersaulting? 	couldn't I have summersaulted?
couldn't you have summersaulted?
couldn't she have summersaulted?
couldn't we have summersaulted?
couldn't you have summersaulted?
couldn't they have summersaulted? 	couldn't I have been summersaulting?
couldn't you have been summersaulting?
couldn't she have been summersaulting?
couldn't we have been summersaulting?
couldn't you have been summersaulting?
couldn't they have been summersaulting?