English verb conjugation
COULD DEPART

Regular verb: depart - departed - departed

Affirmation

Simple form	V-ing form
I could depart you could depart she could depart we could depart you could depart they could depart	I could be departing you could be departing she could be departing we could be departing you could be departing they could be departing
Perfect	V-ing perfect
I could have departed you could have departed she could have departed we could have departed you could have departed they could have departed	I could have been departing you could have been departing she could have been departing we could have been departing you could have been departing they could have been departing

Negation

Simple form	V-ing form
I couldn't depart you couldn't depart she couldn't depart we couldn't depart you couldn't depart they couldn't depart	I couldn't be departing you couldn't be departing she couldn't be departing we couldn't be departing you couldn't be departing they couldn't be departing
Perfect	V-ing perfect
I couldn't have departed you couldn't have departed she couldn't have departed we couldn't have departed you couldn't have departed they couldn't have departed	I couldn't have been departing you couldn't have been departing she couldn't have been departing we couldn't have been departing you couldn't have been departing they couldn't have been departing

Interrogative form

Simple form	V-ing form
could I depart? could you depart? could she depart? could we depart? could you depart? could they depart?	could I be departing? could you be departing? could she be departing? could we be departing? could you be departing? could they be departing?
Perfect	V-ing perfect
could I have departed? could you have departed? could she have departed? could we have departed? could you have departed? could they have departed?	could I have been departing? could you have been departing? could she have been departing? could we have been departing? could you have been departing? could they have been departing?

Interro-negative form

Simple form	V-ing form
couldn't I depart? couldn't you depart? couldn't she depart? couldn't we depart? couldn't you depart? couldn't they depart?	couldn't I be departing? couldn't you be departing? couldn't she be departing? couldn't we be departing? couldn't you be departing? couldn't they be departing?
Perfect	V-ing perfect
couldn't I have departed? couldn't you have departed? couldn't she have departed? couldn't we have departed? couldn't you have departed? couldn't they have departed?	couldn't I have been departing? couldn't you have been departing? couldn't she have been departing? couldn't we have been departing? couldn't you have been departing? couldn't they have been departing?