English verb conjugation
COULD HARROW

Regular verb: harrow - harrowed - harrowed

Affirmation

Simple form	V-ing form
I could harrow you could harrow she could harrow we could harrow you could harrow they could harrow	I could be harrowing you could be harrowing she could be harrowing we could be harrowing you could be harrowing they could be harrowing
Perfect	V-ing perfect
I could have harrowed you could have harrowed she could have harrowed we could have harrowed you could have harrowed they could have harrowed	I could have been harrowing you could have been harrowing she could have been harrowing we could have been harrowing you could have been harrowing they could have been harrowing

Negation

Simple form	V-ing form
I couldn't harrow you couldn't harrow she couldn't harrow we couldn't harrow you couldn't harrow they couldn't harrow	I couldn't be harrowing you couldn't be harrowing she couldn't be harrowing we couldn't be harrowing you couldn't be harrowing they couldn't be harrowing
Perfect	V-ing perfect
I couldn't have harrowed you couldn't have harrowed she couldn't have harrowed we couldn't have harrowed you couldn't have harrowed they couldn't have harrowed	I couldn't have been harrowing you couldn't have been harrowing she couldn't have been harrowing we couldn't have been harrowing you couldn't have been harrowing they couldn't have been harrowing

Interrogative form

Simple form	V-ing form
could I harrow? could you harrow? could she harrow? could we harrow? could you harrow? could they harrow?	could I be harrowing? could you be harrowing? could she be harrowing? could we be harrowing? could you be harrowing? could they be harrowing?
Perfect	V-ing perfect
could I have harrowed? could you have harrowed? could she have harrowed? could we have harrowed? could you have harrowed? could they have harrowed?	could I have been harrowing? could you have been harrowing? could she have been harrowing? could we have been harrowing? could you have been harrowing? could they have been harrowing?

Interro-negative form

Simple form	V-ing form
couldn't I harrow? couldn't you harrow? couldn't she harrow? couldn't we harrow? couldn't you harrow? couldn't they harrow?	couldn't I be harrowing? couldn't you be harrowing? couldn't she be harrowing? couldn't we be harrowing? couldn't you be harrowing? couldn't they be harrowing?
Perfect	V-ing perfect
couldn't I have harrowed? couldn't you have harrowed? couldn't she have harrowed? couldn't we have harrowed? couldn't you have harrowed? couldn't they have harrowed?	couldn't I have been harrowing? couldn't you have been harrowing? couldn't she have been harrowing? couldn't we have been harrowing? couldn't you have been harrowing? couldn't they have been harrowing?