English verb conjugation
COULD VAT

Regular verb: vat - vatted - vatted

Affirmation

Simple form	V-ing form
I could vat you could vat he could vat we could vat you could vat they could vat	I could be vatting you could be vatting he could be vatting we could be vatting you could be vatting they could be vatting
Perfect	V-ing perfect
I could have vatted you could have vatted he could have vatted we could have vatted you could have vatted they could have vatted	I could have been vatting you could have been vatting he could have been vatting we could have been vatting you could have been vatting they could have been vatting

Negation

Simple form	V-ing form
I could not vat you could not vat he could not vat we could not vat you could not vat they could not vat	I could not be vatting you could not be vatting he could not be vatting we could not be vatting you could not be vatting they could not be vatting
Perfect	V-ing perfect
I could not have vatted you could not have vatted he could not have vatted we could not have vatted you could not have vatted they could not have vatted	I could not have been vatting you could not have been vatting he could not have been vatting we could not have been vatting you could not have been vatting they could not have been vatting

Interrogative form

Simple form	V-ing form
could I vat? could you vat? could he vat? could we vat? could you vat? could they vat?	could I be vatting? could you be vatting? could he be vatting? could we be vatting? could you be vatting? could they be vatting?
Perfect	V-ing perfect
could I have vatted? could you have vatted? could he have vatted? could we have vatted? could you have vatted? could they have vatted?	could I have been vatting? could you have been vatting? could he have been vatting? could we have been vatting? could you have been vatting? could they have been vatting?

Interro-negative form

Simple form	V-ing form
could I not vat? could you not vat? could he not vat? could we not vat? could you not vat? could they not vat?	could I not be vatting? could you not be vatting? could he not be vatting? could we not be vatting? could you not be vatting? could they not be vatting?
Perfect	V-ing perfect
could I not have vatted? could you not have vatted? could he not have vatted? could we not have vatted? could you not have vatted? could they not have vatted?	could I not have been vatting? could you not have been vatting? could he not have been vatting? could we not have been vatting? could you not have been vatting? could they not have been vatting?