could throttle
Regular verb: throttle - throttled- throttled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could throttle
you could throttle
she could throttle
we could throttle
you could throttle
they could throttle 	I could be throttling
you could be throttling
she could be throttling
we could be throttling
you could be throttling
they could be throttling	I could have throttled
you could have throttled
she could have throttled
we could have throttled
you could have throttled
they could have throttled	I could have been throttling
you could have been throttling
she could have been throttling
we could have been throttling
you could have been throttling
they could have been throttling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not throttle
you could not throttle
she could not throttle
we could not throttle
you could not throttle
they could not throttle 	I could not be throttling
you could not be throttling
she could not be throttling
we could not be throttling
you could not be throttling
they could not be throttling	I could not have throttled
you could not have throttled
she could not have throttled
we could not have throttled
you could not have throttled
they could not have throttled	I could not have been throttling
you could not have been throttling
she could not have been throttling
we could not have been throttling
you could not have been throttling
they could not have been throttling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I throttle?
could you throttle?
could she throttle?
could we throttle?
could you throttle?
could they throttle? 	could I be throttling?
could you be throttling?
could she be throttling?
could we be throttling?
could you be throttling?
could they be throttling? 	could I have throttled?
could you have throttled?
could she have throttled?
could we have throttled?
could you have throttled?
could they have throttled? 	could I have been throttling?
could you have been throttling?
could she have been throttling?
could we have been throttling?
could you have been throttling?
could they have been throttling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not throttle?
could you not throttle?
could she not throttle?
could we not throttle?
could you not throttle?
could they not throttle? 	could I not be throttling?
could you not be throttling?
could she not be throttling?
could we not be throttling?
could you not be throttling?
could they not be throttling? 	could I not have throttled?
could you not have throttled?
could she not have throttled?
could we not have throttled?
could you not have throttled?
could they not have throttled? 	could I not have been throttling?
could you not have been throttling?
could she not have been throttling?
could we not have been throttling?
could you not have been throttling?
could they not have been throttling?