could four-flush
Verbe régulier : four-flush - four-flushed- four-flushed

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could four-flush
you could four-flush
she could four-flush
we could four-flush
you could four-flush
they could four-flush 	I could be four-flushing
you could be four-flushing
she could be four-flushing
we could be four-flushing
you could be four-flushing
they could be four-flushing	I could have four-flushed
you could have four-flushed
she could have four-flushed
we could have four-flushed
you could have four-flushed
they could have four-flushed	I could have been four-flushing
you could have been four-flushing
she could have been four-flushing
we could have been four-flushing
you could have been four-flushing
they could have been four-flushing	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could not four-flush
you could not four-flush
she could not four-flush
we could not four-flush
you could not four-flush
they could not four-flush 	I could not be four-flushing
you could not be four-flushing
she could not be four-flushing
we could not be four-flushing
you could not be four-flushing
they could not be four-flushing	I could not have four-flushed
you could not have four-flushed
she could not have four-flushed
we could not have four-flushed
you could not have four-flushed
they could not have four-flushed	I could not have been four-flushing
you could not have been four-flushing
she could not have been four-flushing
we could not have been four-flushing
you could not have been four-flushing
they could not have been four-flushing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I four-flush?
could you four-flush?
could she four-flush?
could we four-flush?
could you four-flush?
could they four-flush? 	could I be four-flushing?
could you be four-flushing?
could she be four-flushing?
could we be four-flushing?
could you be four-flushing?
could they be four-flushing? 	could I have four-flushed?
could you have four-flushed?
could she have four-flushed?
could we have four-flushed?
could you have four-flushed?
could they have four-flushed? 	could I have been four-flushing?
could you have been four-flushing?
could she have been four-flushing?
could we have been four-flushing?
could you have been four-flushing?
could they have been four-flushing? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I not four-flush?
could you not four-flush?
could she not four-flush?
could we not four-flush?
could you not four-flush?
could they not four-flush? 	could I not be four-flushing?
could you not be four-flushing?
could she not be four-flushing?
could we not be four-flushing?
could you not be four-flushing?
could they not be four-flushing? 	could I not have four-flushed?
could you not have four-flushed?
could she not have four-flushed?
could we not have four-flushed?
could you not have four-flushed?
could they not have four-flushed? 	could I not have been four-flushing?
could you not have been four-flushing?
could she not have been four-flushing?
could we not have been four-flushing?
could you not have been four-flushing?
could they not have been four-flushing?