must four-flush
Verbo regular: four-flush - four-flushed- four-flushed

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must four-flush
you must four-flush
he must four-flush
we must four-flush
you must four-flush
they must four-flush 	I must be four-flushing
you must be four-flushing
he must be four-flushing
we must be four-flushing
you must be four-flushing
they must be four-flushing	I must have four-flushed
you must have four-flushed
he must have four-flushed
we must have four-flushed
you must have four-flushed
they must have four-flushed	I must have been four-flushing
you must have been four-flushing
he must have been four-flushing
we must have been four-flushing
you must have been four-flushing
they must have been four-flushing	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must not four-flush
you must not four-flush
he must not four-flush
we must not four-flush
you must not four-flush
they must not four-flush 	I must not be four-flushing
you must not be four-flushing
he must not be four-flushing
we must not be four-flushing
you must not be four-flushing
they must not be four-flushing	I must not have four-flushed
you must not have four-flushed
he must not have four-flushed
we must not have four-flushed
you must not have four-flushed
they must not have four-flushed	I must not have been four-flushing
you must not have been four-flushing
he must not have been four-flushing
we must not have been four-flushing
you must not have been four-flushing
they must not have been four-flushing	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I four-flush?
must you four-flush?
must he four-flush?
must we four-flush?
must you four-flush?
must they four-flush? 	must I be four-flushing?
must you be four-flushing?
must he be four-flushing?
must we be four-flushing?
must you be four-flushing?
must they be four-flushing? 	must I have four-flushed?
must you have four-flushed?
must he have four-flushed?
must we have four-flushed?
must you have four-flushed?
must they have four-flushed? 	must I have been four-flushing?
must you have been four-flushing?
must he have been four-flushing?
must we have been four-flushing?
must you have been four-flushing?
must they have been four-flushing? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I not four-flush?
must you not four-flush?
must he not four-flush?
must we not four-flush?
must you not four-flush?
must they not four-flush? 	must I not be four-flushing?
must you not be four-flushing?
must he not be four-flushing?
must we not be four-flushing?
must you not be four-flushing?
must they not be four-flushing? 	must I not have four-flushed?
must you not have four-flushed?
must he not have four-flushed?
must we not have four-flushed?
must you not have four-flushed?
must they not have four-flushed? 	must I not have been four-flushing?
must you not have been four-flushing?
must he not have been four-flushing?
must we not have been four-flushing?
must you not have been four-flushing?
must they not have been four-flushing?