English verb conjugation
COULD EMBARK

Regular verb: embark - embarked - embarked

Affirmation

Simple form	V-ing form
I could embark you could embark he could embark we could embark you could embark they could embark	I could be embarking you could be embarking he could be embarking we could be embarking you could be embarking they could be embarking
Perfect	V-ing perfect
I could have embarked you could have embarked he could have embarked we could have embarked you could have embarked they could have embarked	I could have been embarking you could have been embarking he could have been embarking we could have been embarking you could have been embarking they could have been embarking

Negation

Simple form	V-ing form
I couldn't embark you couldn't embark he couldn't embark we couldn't embark you couldn't embark they couldn't embark	I couldn't be embarking you couldn't be embarking he couldn't be embarking we couldn't be embarking you couldn't be embarking they couldn't be embarking
Perfect	V-ing perfect
I couldn't have embarked you couldn't have embarked he couldn't have embarked we couldn't have embarked you couldn't have embarked they couldn't have embarked	I couldn't have been embarking you couldn't have been embarking he couldn't have been embarking we couldn't have been embarking you couldn't have been embarking they couldn't have been embarking

Interrogative form

Simple form	V-ing form
could I embark? could you embark? could he embark? could we embark? could you embark? could they embark?	could I be embarking? could you be embarking? could he be embarking? could we be embarking? could you be embarking? could they be embarking?
Perfect	V-ing perfect
could I have embarked? could you have embarked? could he have embarked? could we have embarked? could you have embarked? could they have embarked?	could I have been embarking? could you have been embarking? could he have been embarking? could we have been embarking? could you have been embarking? could they have been embarking?

Interro-negative form

Simple form	V-ing form
couldn't I embark? couldn't you embark? couldn't he embark? couldn't we embark? couldn't you embark? couldn't they embark?	couldn't I be embarking? couldn't you be embarking? couldn't he be embarking? couldn't we be embarking? couldn't you be embarking? couldn't they be embarking?
Perfect	V-ing perfect
couldn't I have embarked? couldn't you have embarked? couldn't he have embarked? couldn't we have embarked? couldn't you have embarked? couldn't they have embarked?	couldn't I have been embarking? couldn't you have been embarking? couldn't he have been embarking? couldn't we have been embarking? couldn't you have been embarking? couldn't they have been embarking?