must pipette
Verbo regular: pipette - pipetted- pipetted

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must pipette
you must pipette
he must pipette
we must pipette
you must pipette
they must pipette 	I must be pipetting
you must be pipetting
he must be pipetting
we must be pipetting
you must be pipetting
they must be pipetting	I must have pipetted
you must have pipetted
he must have pipetted
we must have pipetted
you must have pipetted
they must have pipetted	I must have been pipetting
you must have been pipetting
he must have been pipetting
we must have been pipetting
you must have been pipetting
they must have been pipetting	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not pipette
you must not pipette
he must not pipette
we must not pipette
you must not pipette
they must not pipette 	I must not be pipetting
you must not be pipetting
he must not be pipetting
we must not be pipetting
you must not be pipetting
they must not be pipetting	I must not have pipetted
you must not have pipetted
he must not have pipetted
we must not have pipetted
you must not have pipetted
they must not have pipetted	I must not have been pipetting
you must not have been pipetting
he must not have been pipetting
we must not have been pipetting
you must not have been pipetting
they must not have been pipetting	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I pipette?
must you pipette?
must he pipette?
must we pipette?
must you pipette?
must they pipette? 	must I be pipetting?
must you be pipetting?
must he be pipetting?
must we be pipetting?
must you be pipetting?
must they be pipetting? 	must I have pipetted?
must you have pipetted?
must he have pipetted?
must we have pipetted?
must you have pipetted?
must they have pipetted? 	must I have been pipetting?
must you have been pipetting?
must he have been pipetting?
must we have been pipetting?
must you have been pipetting?
must they have been pipetting? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not pipette?
must you not pipette?
must he not pipette?
must we not pipette?
must you not pipette?
must they not pipette? 	must I not be pipetting?
must you not be pipetting?
must he not be pipetting?
must we not be pipetting?
must you not be pipetting?
must they not be pipetting? 	must I not have pipetted?
must you not have pipetted?
must he not have pipetted?
must we not have pipetted?
must you not have pipetted?
must they not have pipetted? 	must I not have been pipetting?
must you not have been pipetting?
must he not have been pipetting?
must we not have been pipetting?
must you not have been pipetting?
must they not have been pipetting?