English verb conjugation
COULD DRUG

Regular verb: drug - drugged - drugged

Affirmation

Simple form	V-ing form
I could drug you could drug he could drug we could drug you could drug they could drug	I could be drugging you could be drugging he could be drugging we could be drugging you could be drugging they could be drugging
Perfect	V-ing perfect
I could have drugged you could have drugged he could have drugged we could have drugged you could have drugged they could have drugged	I could have been drugging you could have been drugging he could have been drugging we could have been drugging you could have been drugging they could have been drugging

Negation

Simple form	V-ing form
I couldn't drug you couldn't drug he couldn't drug we couldn't drug you couldn't drug they couldn't drug	I couldn't be drugging you couldn't be drugging he couldn't be drugging we couldn't be drugging you couldn't be drugging they couldn't be drugging
Perfect	V-ing perfect
I couldn't have drugged you couldn't have drugged he couldn't have drugged we couldn't have drugged you couldn't have drugged they couldn't have drugged	I couldn't have been drugging you couldn't have been drugging he couldn't have been drugging we couldn't have been drugging you couldn't have been drugging they couldn't have been drugging

Interrogative form

Simple form	V-ing form
could I drug? could you drug? could he drug? could we drug? could you drug? could they drug?	could I be drugging? could you be drugging? could he be drugging? could we be drugging? could you be drugging? could they be drugging?
Perfect	V-ing perfect
could I have drugged? could you have drugged? could he have drugged? could we have drugged? could you have drugged? could they have drugged?	could I have been drugging? could you have been drugging? could he have been drugging? could we have been drugging? could you have been drugging? could they have been drugging?

Interro-negative form

Simple form	V-ing form
couldn't I drug? couldn't you drug? couldn't he drug? couldn't we drug? couldn't you drug? couldn't they drug?	couldn't I be drugging? couldn't you be drugging? couldn't he be drugging? couldn't we be drugging? couldn't you be drugging? couldn't they be drugging?
Perfect	V-ing perfect
couldn't I have drugged? couldn't you have drugged? couldn't he have drugged? couldn't we have drugged? couldn't you have drugged? couldn't they have drugged?	couldn't I have been drugging? couldn't you have been drugging? couldn't he have been drugging? couldn't we have been drugging? couldn't you have been drugging? couldn't they have been drugging?