must throttle
Verbo regular: throttle - throttled- throttled

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must throttle
you must throttle
he must throttle
we must throttle
you must throttle
they must throttle 	I must be throttling
you must be throttling
he must be throttling
we must be throttling
you must be throttling
they must be throttling	I must have throttled
you must have throttled
he must have throttled
we must have throttled
you must have throttled
they must have throttled	I must have been throttling
you must have been throttling
he must have been throttling
we must have been throttling
you must have been throttling
they must have been throttling	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't throttle
you mustn't throttle
he mustn't throttle
we mustn't throttle
you mustn't throttle
they mustn't throttle 	I mustn't be throttling
you mustn't be throttling
he mustn't be throttling
we mustn't be throttling
you mustn't be throttling
they mustn't be throttling	I mustn't have throttled
you mustn't have throttled
he mustn't have throttled
we mustn't have throttled
you mustn't have throttled
they mustn't have throttled	I mustn't have been throttling
you mustn't have been throttling
he mustn't have been throttling
we mustn't have been throttling
you mustn't have been throttling
they mustn't have been throttling	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I throttle?
must you throttle?
must he throttle?
must we throttle?
must you throttle?
must they throttle? 	must I be throttling?
must you be throttling?
must he be throttling?
must we be throttling?
must you be throttling?
must they be throttling? 	must I have throttled?
must you have throttled?
must he have throttled?
must we have throttled?
must you have throttled?
must they have throttled? 	must I have been throttling?
must you have been throttling?
must he have been throttling?
must we have been throttling?
must you have been throttling?
must they have been throttling? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I throttle?
mustn't you throttle?
mustn't he throttle?
mustn't we throttle?
mustn't you throttle?
mustn't they throttle? 	mustn't I be throttling?
mustn't you be throttling?
mustn't he be throttling?
mustn't we be throttling?
mustn't you be throttling?
mustn't they be throttling? 	mustn't I have throttled?
mustn't you have throttled?
mustn't he have throttled?
mustn't we have throttled?
mustn't you have throttled?
mustn't they have throttled? 	mustn't I have been throttling?
mustn't you have been throttling?
mustn't he have been throttling?
mustn't we have been throttling?
mustn't you have been throttling?
mustn't they have been throttling?