English verb conjugation
COULD DRINK

Irregular verb: drink - drank - drunk

Affirmation

Simple form	V-ing form
I could drink you could drink she could drink we could drink you could drink they could drink	I could be drinking you could be drinking she could be drinking we could be drinking you could be drinking they could be drinking
Perfect	V-ing perfect
I could have drunk you could have drunk she could have drunk we could have drunk you could have drunk they could have drunk	I could have been drinking you could have been drinking she could have been drinking we could have been drinking you could have been drinking they could have been drinking

Negation

Simple form	V-ing form
I couldn't drink you couldn't drink she couldn't drink we couldn't drink you couldn't drink they couldn't drink	I couldn't be drinking you couldn't be drinking she couldn't be drinking we couldn't be drinking you couldn't be drinking they couldn't be drinking
Perfect	V-ing perfect
I couldn't have drunk you couldn't have drunk she couldn't have drunk we couldn't have drunk you couldn't have drunk they couldn't have drunk	I couldn't have been drinking you couldn't have been drinking she couldn't have been drinking we couldn't have been drinking you couldn't have been drinking they couldn't have been drinking

Interrogative form

Simple form	V-ing form
could I drink? could you drink? could she drink? could we drink? could you drink? could they drink?	could I be drinking? could you be drinking? could she be drinking? could we be drinking? could you be drinking? could they be drinking?
Perfect	V-ing perfect
could I have drunk? could you have drunk? could she have drunk? could we have drunk? could you have drunk? could they have drunk?	could I have been drinking? could you have been drinking? could she have been drinking? could we have been drinking? could you have been drinking? could they have been drinking?

Interro-negative form

Simple form	V-ing form
couldn't I drink? couldn't you drink? couldn't she drink? couldn't we drink? couldn't you drink? couldn't they drink?	couldn't I be drinking? couldn't you be drinking? couldn't she be drinking? couldn't we be drinking? couldn't you be drinking? couldn't they be drinking?
Perfect	V-ing perfect
couldn't I have drunk? couldn't you have drunk? couldn't she have drunk? couldn't we have drunk? couldn't you have drunk? couldn't they have drunk?	couldn't I have been drinking? couldn't you have been drinking? couldn't she have been drinking? couldn't we have been drinking? couldn't you have been drinking? couldn't they have been drinking?