English verb conjugation
COULD NEATEN

Regular verb: neaten - neatened - neatened

Affirmation

Simple form	V-ing form
I could neaten you could neaten he could neaten we could neaten you could neaten they could neaten	I could be neatening you could be neatening he could be neatening we could be neatening you could be neatening they could be neatening
Perfect	V-ing perfect
I could have neatened you could have neatened he could have neatened we could have neatened you could have neatened they could have neatened	I could have been neatening you could have been neatening he could have been neatening we could have been neatening you could have been neatening they could have been neatening

Negation

Simple form	V-ing form
I couldn't neaten you couldn't neaten he couldn't neaten we couldn't neaten you couldn't neaten they couldn't neaten	I couldn't be neatening you couldn't be neatening he couldn't be neatening we couldn't be neatening you couldn't be neatening they couldn't be neatening
Perfect	V-ing perfect
I couldn't have neatened you couldn't have neatened he couldn't have neatened we couldn't have neatened you couldn't have neatened they couldn't have neatened	I couldn't have been neatening you couldn't have been neatening he couldn't have been neatening we couldn't have been neatening you couldn't have been neatening they couldn't have been neatening

Interrogative form

Simple form	V-ing form
could I neaten? could you neaten? could he neaten? could we neaten? could you neaten? could they neaten?	could I be neatening? could you be neatening? could he be neatening? could we be neatening? could you be neatening? could they be neatening?
Perfect	V-ing perfect
could I have neatened? could you have neatened? could he have neatened? could we have neatened? could you have neatened? could they have neatened?	could I have been neatening? could you have been neatening? could he have been neatening? could we have been neatening? could you have been neatening? could they have been neatening?

Interro-negative form

Simple form	V-ing form
couldn't I neaten? couldn't you neaten? couldn't he neaten? couldn't we neaten? couldn't you neaten? couldn't they neaten?	couldn't I be neatening? couldn't you be neatening? couldn't he be neatening? couldn't we be neatening? couldn't you be neatening? couldn't they be neatening?
Perfect	V-ing perfect
couldn't I have neatened? couldn't you have neatened? couldn't he have neatened? couldn't we have neatened? couldn't you have neatened? couldn't they have neatened?	couldn't I have been neatening? couldn't you have been neatening? couldn't he have been neatening? couldn't we have been neatening? couldn't you have been neatening? couldn't they have been neatening?