English verb conjugation
COULD WHIZ

Regular verb: whiz - whized - whized

Affirmation

Simple form	V-ing form
I could whiz you could whiz he could whiz we could whiz you could whiz they could whiz	I could be whizing you could be whizing he could be whizing we could be whizing you could be whizing they could be whizing
Perfect	V-ing perfect
I could have whized you could have whized he could have whized we could have whized you could have whized they could have whized	I could have been whizing you could have been whizing he could have been whizing we could have been whizing you could have been whizing they could have been whizing

Negation

Simple form	V-ing form
I could not whiz you could not whiz he could not whiz we could not whiz you could not whiz they could not whiz	I could not be whizing you could not be whizing he could not be whizing we could not be whizing you could not be whizing they could not be whizing
Perfect	V-ing perfect
I could not have whized you could not have whized he could not have whized we could not have whized you could not have whized they could not have whized	I could not have been whizing you could not have been whizing he could not have been whizing we could not have been whizing you could not have been whizing they could not have been whizing

Interrogative form

Simple form	V-ing form
could I whiz? could you whiz? could he whiz? could we whiz? could you whiz? could they whiz?	could I be whizing? could you be whizing? could he be whizing? could we be whizing? could you be whizing? could they be whizing?
Perfect	V-ing perfect
could I have whized? could you have whized? could he have whized? could we have whized? could you have whized? could they have whized?	could I have been whizing? could you have been whizing? could he have been whizing? could we have been whizing? could you have been whizing? could they have been whizing?

Interro-negative form

Simple form	V-ing form
could I not whiz? could you not whiz? could he not whiz? could we not whiz? could you not whiz? could they not whiz?	could I not be whizing? could you not be whizing? could he not be whizing? could we not be whizing? could you not be whizing? could they not be whizing?
Perfect	V-ing perfect
could I not have whized? could you not have whized? could he not have whized? could we not have whized? could you not have whized? could they not have whized?	could I not have been whizing? could you not have been whizing? could he not have been whizing? could we not have been whizing? could you not have been whizing? could they not have been whizing?