English verb conjugation
COULD CULL

Regular verb: cull - culled - culled

Affirmation

Simple form	V-ing form
I could cull you could cull he could cull we could cull you could cull they could cull	I could be culling you could be culling he could be culling we could be culling you could be culling they could be culling
Perfect	V-ing perfect
I could have culled you could have culled he could have culled we could have culled you could have culled they could have culled	I could have been culling you could have been culling he could have been culling we could have been culling you could have been culling they could have been culling

Negation

Simple form	V-ing form
I couldn't cull you couldn't cull he couldn't cull we couldn't cull you couldn't cull they couldn't cull	I couldn't be culling you couldn't be culling he couldn't be culling we couldn't be culling you couldn't be culling they couldn't be culling
Perfect	V-ing perfect
I couldn't have culled you couldn't have culled he couldn't have culled we couldn't have culled you couldn't have culled they couldn't have culled	I couldn't have been culling you couldn't have been culling he couldn't have been culling we couldn't have been culling you couldn't have been culling they couldn't have been culling

Interrogative form

Simple form	V-ing form
could I cull? could you cull? could he cull? could we cull? could you cull? could they cull?	could I be culling? could you be culling? could he be culling? could we be culling? could you be culling? could they be culling?
Perfect	V-ing perfect
could I have culled? could you have culled? could he have culled? could we have culled? could you have culled? could they have culled?	could I have been culling? could you have been culling? could he have been culling? could we have been culling? could you have been culling? could they have been culling?

Interro-negative form

Simple form	V-ing form
couldn't I cull? couldn't you cull? couldn't he cull? couldn't we cull? couldn't you cull? couldn't they cull?	couldn't I be culling? couldn't you be culling? couldn't he be culling? couldn't we be culling? couldn't you be culling? couldn't they be culling?
Perfect	V-ing perfect
couldn't I have culled? couldn't you have culled? couldn't he have culled? couldn't we have culled? couldn't you have culled? couldn't they have culled?	couldn't I have been culling? couldn't you have been culling? couldn't he have been culling? couldn't we have been culling? couldn't you have been culling? couldn't they have been culling?