English verb conjugation
COULD WHISTLE-STOP

Regular verb: whistle-stop - whistle-stoped - whistle-stoped

Affirmation

Simple form	V-ing form
I could whistle-stop you could whistle-stop he could whistle-stop we could whistle-stop you could whistle-stop they could whistle-stop	I could be whistle-stoping you could be whistle-stoping he could be whistle-stoping we could be whistle-stoping you could be whistle-stoping they could be whistle-stoping
Perfect	V-ing perfect
I could have whistle-stoped you could have whistle-stoped he could have whistle-stoped we could have whistle-stoped you could have whistle-stoped they could have whistle-stoped	I could have been whistle-stoping you could have been whistle-stoping he could have been whistle-stoping we could have been whistle-stoping you could have been whistle-stoping they could have been whistle-stoping

Negation

Simple form	V-ing form
I couldn't whistle-stop you couldn't whistle-stop he couldn't whistle-stop we couldn't whistle-stop you couldn't whistle-stop they couldn't whistle-stop	I couldn't be whistle-stoping you couldn't be whistle-stoping he couldn't be whistle-stoping we couldn't be whistle-stoping you couldn't be whistle-stoping they couldn't be whistle-stoping
Perfect	V-ing perfect
I couldn't have whistle-stoped you couldn't have whistle-stoped he couldn't have whistle-stoped we couldn't have whistle-stoped you couldn't have whistle-stoped they couldn't have whistle-stoped	I couldn't have been whistle-stoping you couldn't have been whistle-stoping he couldn't have been whistle-stoping we couldn't have been whistle-stoping you couldn't have been whistle-stoping they couldn't have been whistle-stoping

Interrogative form

Simple form	V-ing form
could I whistle-stop? could you whistle-stop? could he whistle-stop? could we whistle-stop? could you whistle-stop? could they whistle-stop?	could I be whistle-stoping? could you be whistle-stoping? could he be whistle-stoping? could we be whistle-stoping? could you be whistle-stoping? could they be whistle-stoping?
Perfect	V-ing perfect
could I have whistle-stoped? could you have whistle-stoped? could he have whistle-stoped? could we have whistle-stoped? could you have whistle-stoped? could they have whistle-stoped?	could I have been whistle-stoping? could you have been whistle-stoping? could he have been whistle-stoping? could we have been whistle-stoping? could you have been whistle-stoping? could they have been whistle-stoping?

Interro-negative form

Simple form	V-ing form
couldn't I whistle-stop? couldn't you whistle-stop? couldn't he whistle-stop? couldn't we whistle-stop? couldn't you whistle-stop? couldn't they whistle-stop?	couldn't I be whistle-stoping? couldn't you be whistle-stoping? couldn't he be whistle-stoping? couldn't we be whistle-stoping? couldn't you be whistle-stoping? couldn't they be whistle-stoping?
Perfect	V-ing perfect
couldn't I have whistle-stoped? couldn't you have whistle-stoped? couldn't he have whistle-stoped? couldn't we have whistle-stoped? couldn't you have whistle-stoped? couldn't they have whistle-stoped?	couldn't I have been whistle-stoping? couldn't you have been whistle-stoping? couldn't he have been whistle-stoping? couldn't we have been whistle-stoping? couldn't you have been whistle-stoping? couldn't they have been whistle-stoping?