English verb conjugation
COULD TROOP

Regular verb: troop - trooped - trooped

Affirmation

Simple form	V-ing form
I could troop you could troop he could troop we could troop you could troop they could troop	I could be trooping you could be trooping he could be trooping we could be trooping you could be trooping they could be trooping
Perfect	V-ing perfect
I could have trooped you could have trooped he could have trooped we could have trooped you could have trooped they could have trooped	I could have been trooping you could have been trooping he could have been trooping we could have been trooping you could have been trooping they could have been trooping

Negation

Simple form	V-ing form
I couldn't troop you couldn't troop he couldn't troop we couldn't troop you couldn't troop they couldn't troop	I couldn't be trooping you couldn't be trooping he couldn't be trooping we couldn't be trooping you couldn't be trooping they couldn't be trooping
Perfect	V-ing perfect
I couldn't have trooped you couldn't have trooped he couldn't have trooped we couldn't have trooped you couldn't have trooped they couldn't have trooped	I couldn't have been trooping you couldn't have been trooping he couldn't have been trooping we couldn't have been trooping you couldn't have been trooping they couldn't have been trooping

Interrogative form

Simple form	V-ing form
could I troop? could you troop? could he troop? could we troop? could you troop? could they troop?	could I be trooping? could you be trooping? could he be trooping? could we be trooping? could you be trooping? could they be trooping?
Perfect	V-ing perfect
could I have trooped? could you have trooped? could he have trooped? could we have trooped? could you have trooped? could they have trooped?	could I have been trooping? could you have been trooping? could he have been trooping? could we have been trooping? could you have been trooping? could they have been trooping?

Interro-negative form

Simple form	V-ing form
couldn't I troop? couldn't you troop? couldn't he troop? couldn't we troop? couldn't you troop? couldn't they troop?	couldn't I be trooping? couldn't you be trooping? couldn't he be trooping? couldn't we be trooping? couldn't you be trooping? couldn't they be trooping?
Perfect	V-ing perfect
couldn't I have trooped? couldn't you have trooped? couldn't he have trooped? couldn't we have trooped? couldn't you have trooped? couldn't they have trooped?	couldn't I have been trooping? couldn't you have been trooping? couldn't he have been trooping? couldn't we have been trooping? couldn't you have been trooping? couldn't they have been trooping?