English verb conjugation
COULD WHIZZ

Regular verb: whizz - whizzed - whizzed

Affirmation

Simple form	V-ing form
I could whizz you could whizz he could whizz we could whizz you could whizz they could whizz	I could be whizzing you could be whizzing he could be whizzing we could be whizzing you could be whizzing they could be whizzing
Perfect	V-ing perfect
I could have whizzed you could have whizzed he could have whizzed we could have whizzed you could have whizzed they could have whizzed	I could have been whizzing you could have been whizzing he could have been whizzing we could have been whizzing you could have been whizzing they could have been whizzing

Negation

Simple form	V-ing form
I could not whizz you could not whizz he could not whizz we could not whizz you could not whizz they could not whizz	I could not be whizzing you could not be whizzing he could not be whizzing we could not be whizzing you could not be whizzing they could not be whizzing
Perfect	V-ing perfect
I could not have whizzed you could not have whizzed he could not have whizzed we could not have whizzed you could not have whizzed they could not have whizzed	I could not have been whizzing you could not have been whizzing he could not have been whizzing we could not have been whizzing you could not have been whizzing they could not have been whizzing

Interrogative form

Simple form	V-ing form
could I whizz? could you whizz? could he whizz? could we whizz? could you whizz? could they whizz?	could I be whizzing? could you be whizzing? could he be whizzing? could we be whizzing? could you be whizzing? could they be whizzing?
Perfect	V-ing perfect
could I have whizzed? could you have whizzed? could he have whizzed? could we have whizzed? could you have whizzed? could they have whizzed?	could I have been whizzing? could you have been whizzing? could he have been whizzing? could we have been whizzing? could you have been whizzing? could they have been whizzing?

Interro-negative form

Simple form	V-ing form
could I not whizz? could you not whizz? could he not whizz? could we not whizz? could you not whizz? could they not whizz?	could I not be whizzing? could you not be whizzing? could he not be whizzing? could we not be whizzing? could you not be whizzing? could they not be whizzing?
Perfect	V-ing perfect
could I not have whizzed? could you not have whizzed? could he not have whizzed? could we not have whizzed? could you not have whizzed? could they not have whizzed?	could I not have been whizzing? could you not have been whizzing? could he not have been whizzing? could we not have been whizzing? could you not have been whizzing? could they not have been whizzing?