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 couldn't vat you couldn't vat he couldn't vat we couldn't vat you couldn't vat they couldn't vat	I couldn't be vatting you couldn't be vatting he couldn't be vatting we couldn't be vatting you couldn't be vatting they couldn't be vatting
Perfect	V-ing perfect
I couldn't have vatted you couldn't have vatted he couldn't have vatted we couldn't have vatted you couldn't have vatted they couldn't have vatted	I couldn't have been vatting you couldn't have been vatting he couldn't have been vatting we couldn't have been vatting you couldn't have been vatting they couldn't 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
couldn't I vat? couldn't you vat? couldn't he vat? couldn't we vat? couldn't you vat? couldn't they vat?	couldn't I be vatting? couldn't you be vatting? couldn't he be vatting? couldn't we be vatting? couldn't you be vatting? couldn't they be vatting?
Perfect	V-ing perfect
couldn't I have vatted? couldn't you have vatted? couldn't he have vatted? couldn't we have vatted? couldn't you have vatted? couldn't they have vatted?	couldn't I have been vatting? couldn't you have been vatting? couldn't he have been vatting? couldn't we have been vatting? couldn't you have been vatting? couldn't they have been vatting?