English verb conjugation
COULD ROVC

Regular verb: rovc - rovced - rovced

Affirmation

Simple form	V-ing form
I could rovc you could rovc he could rovc we could rovc you could rovc they could rovc	I could be rovcing you could be rovcing he could be rovcing we could be rovcing you could be rovcing they could be rovcing
Perfect	V-ing perfect
I could have rovced you could have rovced he could have rovced we could have rovced you could have rovced they could have rovced	I could have been rovcing you could have been rovcing he could have been rovcing we could have been rovcing you could have been rovcing they could have been rovcing

Negation

Simple form	V-ing form
I couldn't rovc you couldn't rovc he couldn't rovc we couldn't rovc you couldn't rovc they couldn't rovc	I couldn't be rovcing you couldn't be rovcing he couldn't be rovcing we couldn't be rovcing you couldn't be rovcing they couldn't be rovcing
Perfect	V-ing perfect
I couldn't have rovced you couldn't have rovced he couldn't have rovced we couldn't have rovced you couldn't have rovced they couldn't have rovced	I couldn't have been rovcing you couldn't have been rovcing he couldn't have been rovcing we couldn't have been rovcing you couldn't have been rovcing they couldn't have been rovcing

Interrogative form

Simple form	V-ing form
could I rovc? could you rovc? could he rovc? could we rovc? could you rovc? could they rovc?	could I be rovcing? could you be rovcing? could he be rovcing? could we be rovcing? could you be rovcing? could they be rovcing?
Perfect	V-ing perfect
could I have rovced? could you have rovced? could he have rovced? could we have rovced? could you have rovced? could they have rovced?	could I have been rovcing? could you have been rovcing? could he have been rovcing? could we have been rovcing? could you have been rovcing? could they have been rovcing?

Interro-negative form

Simple form	V-ing form
couldn't I rovc? couldn't you rovc? couldn't he rovc? couldn't we rovc? couldn't you rovc? couldn't they rovc?	couldn't I be rovcing? couldn't you be rovcing? couldn't he be rovcing? couldn't we be rovcing? couldn't you be rovcing? couldn't they be rovcing?
Perfect	V-ing perfect
couldn't I have rovced? couldn't you have rovced? couldn't he have rovced? couldn't we have rovced? couldn't you have rovced? couldn't they have rovced?	couldn't I have been rovcing? couldn't you have been rovcing? couldn't he have been rovcing? couldn't we have been rovcing? couldn't you have been rovcing? couldn't they have been rovcing?