English verb conjugation
COULD CAVIL

Regular verb: cavil - cavilled - cavilled

Affirmation

Simple form	V-ing form
I could cavil you could cavil he could cavil we could cavil you could cavil they could cavil	I could be cavilling you could be cavilling he could be cavilling we could be cavilling you could be cavilling they could be cavilling
Perfect	V-ing perfect
I could have cavilled you could have cavilled he could have cavilled we could have cavilled you could have cavilled they could have cavilled	I could have been cavilling you could have been cavilling he could have been cavilling we could have been cavilling you could have been cavilling they could have been cavilling

Negation

Simple form	V-ing form
I couldn't cavil you couldn't cavil he couldn't cavil we couldn't cavil you couldn't cavil they couldn't cavil	I couldn't be cavilling you couldn't be cavilling he couldn't be cavilling we couldn't be cavilling you couldn't be cavilling they couldn't be cavilling
Perfect	V-ing perfect
I couldn't have cavilled you couldn't have cavilled he couldn't have cavilled we couldn't have cavilled you couldn't have cavilled they couldn't have cavilled	I couldn't have been cavilling you couldn't have been cavilling he couldn't have been cavilling we couldn't have been cavilling you couldn't have been cavilling they couldn't have been cavilling

Interrogative form

Simple form	V-ing form
could I cavil? could you cavil? could he cavil? could we cavil? could you cavil? could they cavil?	could I be cavilling? could you be cavilling? could he be cavilling? could we be cavilling? could you be cavilling? could they be cavilling?
Perfect	V-ing perfect
could I have cavilled? could you have cavilled? could he have cavilled? could we have cavilled? could you have cavilled? could they have cavilled?	could I have been cavilling? could you have been cavilling? could he have been cavilling? could we have been cavilling? could you have been cavilling? could they have been cavilling?

Interro-negative form

Simple form	V-ing form
couldn't I cavil? couldn't you cavil? couldn't he cavil? couldn't we cavil? couldn't you cavil? couldn't they cavil?	couldn't I be cavilling? couldn't you be cavilling? couldn't he be cavilling? couldn't we be cavilling? couldn't you be cavilling? couldn't they be cavilling?
Perfect	V-ing perfect
couldn't I have cavilled? couldn't you have cavilled? couldn't he have cavilled? couldn't we have cavilled? couldn't you have cavilled? couldn't they have cavilled?	couldn't I have been cavilling? couldn't you have been cavilling? couldn't he have been cavilling? couldn't we have been cavilling? couldn't you have been cavilling? couldn't they have been cavilling?