English verb conjugation
COULD FIRST-FOOT

Regular verb: first-foot - first-footed - first-footed

Affirmation

Simple form	V-ing form
I could first-foot you could first-foot he could first-foot we could first-foot you could first-foot they could first-foot	I could be first-footing you could be first-footing he could be first-footing we could be first-footing you could be first-footing they could be first-footing
Perfect	V-ing perfect
I could have first-footed you could have first-footed he could have first-footed we could have first-footed you could have first-footed they could have first-footed	I could have been first-footing you could have been first-footing he could have been first-footing we could have been first-footing you could have been first-footing they could have been first-footing

Negation

Simple form	V-ing form
I couldn't first-foot you couldn't first-foot he couldn't first-foot we couldn't first-foot you couldn't first-foot they couldn't first-foot	I couldn't be first-footing you couldn't be first-footing he couldn't be first-footing we couldn't be first-footing you couldn't be first-footing they couldn't be first-footing
Perfect	V-ing perfect
I couldn't have first-footed you couldn't have first-footed he couldn't have first-footed we couldn't have first-footed you couldn't have first-footed they couldn't have first-footed	I couldn't have been first-footing you couldn't have been first-footing he couldn't have been first-footing we couldn't have been first-footing you couldn't have been first-footing they couldn't have been first-footing

Interrogative form

Simple form	V-ing form
could I first-foot? could you first-foot? could he first-foot? could we first-foot? could you first-foot? could they first-foot?	could I be first-footing? could you be first-footing? could he be first-footing? could we be first-footing? could you be first-footing? could they be first-footing?
Perfect	V-ing perfect
could I have first-footed? could you have first-footed? could he have first-footed? could we have first-footed? could you have first-footed? could they have first-footed?	could I have been first-footing? could you have been first-footing? could he have been first-footing? could we have been first-footing? could you have been first-footing? could they have been first-footing?

Interro-negative form

Simple form	V-ing form
couldn't I first-foot? couldn't you first-foot? couldn't he first-foot? couldn't we first-foot? couldn't you first-foot? couldn't they first-foot?	couldn't I be first-footing? couldn't you be first-footing? couldn't he be first-footing? couldn't we be first-footing? couldn't you be first-footing? couldn't they be first-footing?
Perfect	V-ing perfect
couldn't I have first-footed? couldn't you have first-footed? couldn't he have first-footed? couldn't we have first-footed? couldn't you have first-footed? couldn't they have first-footed?	couldn't I have been first-footing? couldn't you have been first-footing? couldn't he have been first-footing? couldn't we have been first-footing? couldn't you have been first-footing? couldn't they have been first-footing?