English verb conjugation
COULD DEBARK

Regular verb: debark - debarked - debarked

Affirmation

Simple form	V-ing form
I could debark you could debark he could debark we could debark you could debark they could debark	I could be debarking you could be debarking he could be debarking we could be debarking you could be debarking they could be debarking
Perfect	V-ing perfect
I could have debarked you could have debarked he could have debarked we could have debarked you could have debarked they could have debarked	I could have been debarking you could have been debarking he could have been debarking we could have been debarking you could have been debarking they could have been debarking

Negation

Simple form	V-ing form
I couldn't debark you couldn't debark he couldn't debark we couldn't debark you couldn't debark they couldn't debark	I couldn't be debarking you couldn't be debarking he couldn't be debarking we couldn't be debarking you couldn't be debarking they couldn't be debarking
Perfect	V-ing perfect
I couldn't have debarked you couldn't have debarked he couldn't have debarked we couldn't have debarked you couldn't have debarked they couldn't have debarked	I couldn't have been debarking you couldn't have been debarking he couldn't have been debarking we couldn't have been debarking you couldn't have been debarking they couldn't have been debarking

Interrogative form

Simple form	V-ing form
could I debark? could you debark? could he debark? could we debark? could you debark? could they debark?	could I be debarking? could you be debarking? could he be debarking? could we be debarking? could you be debarking? could they be debarking?
Perfect	V-ing perfect
could I have debarked? could you have debarked? could he have debarked? could we have debarked? could you have debarked? could they have debarked?	could I have been debarking? could you have been debarking? could he have been debarking? could we have been debarking? could you have been debarking? could they have been debarking?

Interro-negative form

Simple form	V-ing form
couldn't I debark? couldn't you debark? couldn't he debark? couldn't we debark? couldn't you debark? couldn't they debark?	couldn't I be debarking? couldn't you be debarking? couldn't he be debarking? couldn't we be debarking? couldn't you be debarking? couldn't they be debarking?
Perfect	V-ing perfect
couldn't I have debarked? couldn't you have debarked? couldn't he have debarked? couldn't we have debarked? couldn't you have debarked? couldn't they have debarked?	couldn't I have been debarking? couldn't you have been debarking? couldn't he have been debarking? couldn't we have been debarking? couldn't you have been debarking? couldn't they have been debarking?