English verb conjugation
COULD DOGFIGHT

Irregular verb: dogfight - dogfought - dogfought

Affirmation

Simple form	V-ing form
I could dogfight you could dogfight he could dogfight we could dogfight you could dogfight they could dogfight	I could be dogfighting you could be dogfighting he could be dogfighting we could be dogfighting you could be dogfighting they could be dogfighting
Perfect	V-ing perfect
I could have dogfought you could have dogfought he could have dogfought we could have dogfought you could have dogfought they could have dogfought	I could have been dogfighting you could have been dogfighting he could have been dogfighting we could have been dogfighting you could have been dogfighting they could have been dogfighting

Negation

Simple form	V-ing form
I couldn't dogfight you couldn't dogfight he couldn't dogfight we couldn't dogfight you couldn't dogfight they couldn't dogfight	I couldn't be dogfighting you couldn't be dogfighting he couldn't be dogfighting we couldn't be dogfighting you couldn't be dogfighting they couldn't be dogfighting
Perfect	V-ing perfect
I couldn't have dogfought you couldn't have dogfought he couldn't have dogfought we couldn't have dogfought you couldn't have dogfought they couldn't have dogfought	I couldn't have been dogfighting you couldn't have been dogfighting he couldn't have been dogfighting we couldn't have been dogfighting you couldn't have been dogfighting they couldn't have been dogfighting

Interrogative form

Simple form	V-ing form
could I dogfight? could you dogfight? could he dogfight? could we dogfight? could you dogfight? could they dogfight?	could I be dogfighting? could you be dogfighting? could he be dogfighting? could we be dogfighting? could you be dogfighting? could they be dogfighting?
Perfect	V-ing perfect
could I have dogfought? could you have dogfought? could he have dogfought? could we have dogfought? could you have dogfought? could they have dogfought?	could I have been dogfighting? could you have been dogfighting? could he have been dogfighting? could we have been dogfighting? could you have been dogfighting? could they have been dogfighting?

Interro-negative form

Simple form	V-ing form
couldn't I dogfight? couldn't you dogfight? couldn't he dogfight? couldn't we dogfight? couldn't you dogfight? couldn't they dogfight?	couldn't I be dogfighting? couldn't you be dogfighting? couldn't he be dogfighting? couldn't we be dogfighting? couldn't you be dogfighting? couldn't they be dogfighting?
Perfect	V-ing perfect
couldn't I have dogfought? couldn't you have dogfought? couldn't he have dogfought? couldn't we have dogfought? couldn't you have dogfought? couldn't they have dogfought?	couldn't I have been dogfighting? couldn't you have been dogfighting? couldn't he have been dogfighting? couldn't we have been dogfighting? couldn't you have been dogfighting? couldn't they have been dogfighting?