English verb conjugation
COULD INFINITIF

Regular verb: infinitif - infinitifed - infinitifed

Warning, this verb may not exist. Conjugation is given as example.

Affirmation

Simple form	V-ing form
I could infinitif you could infinitif he could infinitif we could infinitif you could infinitif they could infinitif	I could be infinitifing you could be infinitifing he could be infinitifing we could be infinitifing you could be infinitifing they could be infinitifing
Perfect	V-ing perfect
I could have infinitifed you could have infinitifed he could have infinitifed we could have infinitifed you could have infinitifed they could have infinitifed	I could have been infinitifing you could have been infinitifing he could have been infinitifing we could have been infinitifing you could have been infinitifing they could have been infinitifing

Negation

Simple form	V-ing form
I couldn't infinitif you couldn't infinitif he couldn't infinitif we couldn't infinitif you couldn't infinitif they couldn't infinitif	I couldn't be infinitifing you couldn't be infinitifing he couldn't be infinitifing we couldn't be infinitifing you couldn't be infinitifing they couldn't be infinitifing
Perfect	V-ing perfect
I couldn't have infinitifed you couldn't have infinitifed he couldn't have infinitifed we couldn't have infinitifed you couldn't have infinitifed they couldn't have infinitifed	I couldn't have been infinitifing you couldn't have been infinitifing he couldn't have been infinitifing we couldn't have been infinitifing you couldn't have been infinitifing they couldn't have been infinitifing

Interrogative form

Simple form	V-ing form
could I infinitif? could you infinitif? could he infinitif? could we infinitif? could you infinitif? could they infinitif?	could I be infinitifing? could you be infinitifing? could he be infinitifing? could we be infinitifing? could you be infinitifing? could they be infinitifing?
Perfect	V-ing perfect
could I have infinitifed? could you have infinitifed? could he have infinitifed? could we have infinitifed? could you have infinitifed? could they have infinitifed?	could I have been infinitifing? could you have been infinitifing? could he have been infinitifing? could we have been infinitifing? could you have been infinitifing? could they have been infinitifing?

Interro-negative form

Simple form	V-ing form
couldn't I infinitif? couldn't you infinitif? couldn't he infinitif? couldn't we infinitif? couldn't you infinitif? couldn't they infinitif?	couldn't I be infinitifing? couldn't you be infinitifing? couldn't he be infinitifing? couldn't we be infinitifing? couldn't you be infinitifing? couldn't they be infinitifing?
Perfect	V-ing perfect
couldn't I have infinitifed? couldn't you have infinitifed? couldn't he have infinitifed? couldn't we have infinitifed? couldn't you have infinitifed? couldn't they have infinitifed?	couldn't I have been infinitifing? couldn't you have been infinitifing? couldn't he have been infinitifing? couldn't we have been infinitifing? couldn't you have been infinitifing? couldn't they have been infinitifing?