English verb conjugation
COULD DOGTROT

Regular verb: dogtrot - dogtroted - dogtroted

Affirmation

Simple form	V-ing form
I could dogtrot you could dogtrot he could dogtrot we could dogtrot you could dogtrot they could dogtrot	I could be dogtroting you could be dogtroting he could be dogtroting we could be dogtroting you could be dogtroting they could be dogtroting
Perfect	V-ing perfect
I could have dogtroted you could have dogtroted he could have dogtroted we could have dogtroted you could have dogtroted they could have dogtroted	I could have been dogtroting you could have been dogtroting he could have been dogtroting we could have been dogtroting you could have been dogtroting they could have been dogtroting

Negation

Simple form	V-ing form
I couldn't dogtrot you couldn't dogtrot he couldn't dogtrot we couldn't dogtrot you couldn't dogtrot they couldn't dogtrot	I couldn't be dogtroting you couldn't be dogtroting he couldn't be dogtroting we couldn't be dogtroting you couldn't be dogtroting they couldn't be dogtroting
Perfect	V-ing perfect
I couldn't have dogtroted you couldn't have dogtroted he couldn't have dogtroted we couldn't have dogtroted you couldn't have dogtroted they couldn't have dogtroted	I couldn't have been dogtroting you couldn't have been dogtroting he couldn't have been dogtroting we couldn't have been dogtroting you couldn't have been dogtroting they couldn't have been dogtroting

Interrogative form

Simple form	V-ing form
could I dogtrot? could you dogtrot? could he dogtrot? could we dogtrot? could you dogtrot? could they dogtrot?	could I be dogtroting? could you be dogtroting? could he be dogtroting? could we be dogtroting? could you be dogtroting? could they be dogtroting?
Perfect	V-ing perfect
could I have dogtroted? could you have dogtroted? could he have dogtroted? could we have dogtroted? could you have dogtroted? could they have dogtroted?	could I have been dogtroting? could you have been dogtroting? could he have been dogtroting? could we have been dogtroting? could you have been dogtroting? could they have been dogtroting?

Interro-negative form

Simple form	V-ing form
couldn't I dogtrot? couldn't you dogtrot? couldn't he dogtrot? couldn't we dogtrot? couldn't you dogtrot? couldn't they dogtrot?	couldn't I be dogtroting? couldn't you be dogtroting? couldn't he be dogtroting? couldn't we be dogtroting? couldn't you be dogtroting? couldn't they be dogtroting?
Perfect	V-ing perfect
couldn't I have dogtroted? couldn't you have dogtroted? couldn't he have dogtroted? couldn't we have dogtroted? couldn't you have dogtroted? couldn't they have dogtroted?	couldn't I have been dogtroting? couldn't you have been dogtroting? couldn't he have been dogtroting? couldn't we have been dogtroting? couldn't you have been dogtroting? couldn't they have been dogtroting?