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 couldn't whizz you couldn't whizz he couldn't whizz we couldn't whizz you couldn't whizz they couldn't whizz	I couldn't be whizzing you couldn't be whizzing he couldn't be whizzing we couldn't be whizzing you couldn't be whizzing they couldn't be whizzing
Perfect	V-ing perfect
I couldn't have whizzed you couldn't have whizzed he couldn't have whizzed we couldn't have whizzed you couldn't have whizzed they couldn't have whizzed	I couldn't have been whizzing you couldn't have been whizzing he couldn't have been whizzing we couldn't have been whizzing you couldn't have been whizzing they couldn't 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
couldn't I whizz? couldn't you whizz? couldn't he whizz? couldn't we whizz? couldn't you whizz? couldn't they whizz?	couldn't I be whizzing? couldn't you be whizzing? couldn't he be whizzing? couldn't we be whizzing? couldn't you be whizzing? couldn't they be whizzing?
Perfect	V-ing perfect
couldn't I have whizzed? couldn't you have whizzed? couldn't he have whizzed? couldn't we have whizzed? couldn't you have whizzed? couldn't they have whizzed?	couldn't I have been whizzing? couldn't you have been whizzing? couldn't he have been whizzing? couldn't we have been whizzing? couldn't you have been whizzing? couldn't they have been whizzing?