could backflip
Verbe régulier : backflip - backfliped- backfliped

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could backflip
you could backflip
she could backflip
we could backflip
you could backflip
they could backflip 	I could be backfliping
you could be backfliping
she could be backfliping
we could be backfliping
you could be backfliping
they could be backfliping	I could have backfliped
you could have backfliped
she could have backfliped
we could have backfliped
you could have backfliped
they could have backfliped	I could have been backfliping
you could have been backfliping
she could have been backfliping
we could have been backfliping
you could have been backfliping
they could have been backfliping	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't backflip
you couldn't backflip
she couldn't backflip
we couldn't backflip
you couldn't backflip
they couldn't backflip 	I couldn't be backfliping
you couldn't be backfliping
she couldn't be backfliping
we couldn't be backfliping
you couldn't be backfliping
they couldn't be backfliping	I couldn't have backfliped
you couldn't have backfliped
she couldn't have backfliped
we couldn't have backfliped
you couldn't have backfliped
they couldn't have backfliped	I couldn't have been backfliping
you couldn't have been backfliping
she couldn't have been backfliping
we couldn't have been backfliping
you couldn't have been backfliping
they couldn't have been backfliping	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I backflip?
could you backflip?
could she backflip?
could we backflip?
could you backflip?
could they backflip? 	could I be backfliping?
could you be backfliping?
could she be backfliping?
could we be backfliping?
could you be backfliping?
could they be backfliping? 	could I have backfliped?
could you have backfliped?
could she have backfliped?
could we have backfliped?
could you have backfliped?
could they have backfliped? 	could I have been backfliping?
could you have been backfliping?
could she have been backfliping?
could we have been backfliping?
could you have been backfliping?
could they have been backfliping? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I backflip?
couldn't you backflip?
couldn't she backflip?
couldn't we backflip?
couldn't you backflip?
couldn't they backflip? 	couldn't I be backfliping?
couldn't you be backfliping?
couldn't she be backfliping?
couldn't we be backfliping?
couldn't you be backfliping?
couldn't they be backfliping? 	couldn't I have backfliped?
couldn't you have backfliped?
couldn't she have backfliped?
couldn't we have backfliped?
couldn't you have backfliped?
couldn't they have backfliped? 	couldn't I have been backfliping?
couldn't you have been backfliping?
couldn't she have been backfliping?
couldn't we have been backfliping?
couldn't you have been backfliping?
couldn't they have been backfliping?