English verb conjugation
COULD DOG

Regular verb: dog - dogged - dogged

Affirmation

Simple form	V-ing form
I could dog you could dog she could dog we could dog you could dog they could dog	I could be dogging you could be dogging she could be dogging we could be dogging you could be dogging they could be dogging
Perfect	V-ing perfect
I could have dogged you could have dogged she could have dogged we could have dogged you could have dogged they could have dogged	I could have been dogging you could have been dogging she could have been dogging we could have been dogging you could have been dogging they could have been dogging

Negation

Simple form	V-ing form
I could not dog you could not dog she could not dog we could not dog you could not dog they could not dog	I could not be dogging you could not be dogging she could not be dogging we could not be dogging you could not be dogging they could not be dogging
Perfect	V-ing perfect
I could not have dogged you could not have dogged she could not have dogged we could not have dogged you could not have dogged they could not have dogged	I could not have been dogging you could not have been dogging she could not have been dogging we could not have been dogging you could not have been dogging they could not have been dogging

Interrogative form

Simple form	V-ing form
could I dog? could you dog? could she dog? could we dog? could you dog? could they dog?	could I be dogging? could you be dogging? could she be dogging? could we be dogging? could you be dogging? could they be dogging?
Perfect	V-ing perfect
could I have dogged? could you have dogged? could she have dogged? could we have dogged? could you have dogged? could they have dogged?	could I have been dogging? could you have been dogging? could she have been dogging? could we have been dogging? could you have been dogging? could they have been dogging?

Interro-negative form

Simple form	V-ing form
could I not dog? could you not dog? could she not dog? could we not dog? could you not dog? could they not dog?	could I not be dogging? could you not be dogging? could she not be dogging? could we not be dogging? could you not be dogging? could they not be dogging?
Perfect	V-ing perfect
could I not have dogged? could you not have dogged? could she not have dogged? could we not have dogged? could you not have dogged? could they not have dogged?	could I not have been dogging? could you not have been dogging? could she not have been dogging? could we not have been dogging? could you not have been dogging? could they not have been dogging?