English verb conjugation
COULD UNDOCK

Regular verb: undock - undocked - undocked

Affirmation

Simple form	V-ing form
I could undock you could undock he could undock we could undock you could undock they could undock	I could be undocking you could be undocking he could be undocking we could be undocking you could be undocking they could be undocking
Perfect	V-ing perfect
I could have undocked you could have undocked he could have undocked we could have undocked you could have undocked they could have undocked	I could have been undocking you could have been undocking he could have been undocking we could have been undocking you could have been undocking they could have been undocking

Negation

Simple form	V-ing form
I could not undock you could not undock he could not undock we could not undock you could not undock they could not undock	I could not be undocking you could not be undocking he could not be undocking we could not be undocking you could not be undocking they could not be undocking
Perfect	V-ing perfect
I could not have undocked you could not have undocked he could not have undocked we could not have undocked you could not have undocked they could not have undocked	I could not have been undocking you could not have been undocking he could not have been undocking we could not have been undocking you could not have been undocking they could not have been undocking

Interrogative form

Simple form	V-ing form
could I undock? could you undock? could he undock? could we undock? could you undock? could they undock?	could I be undocking? could you be undocking? could he be undocking? could we be undocking? could you be undocking? could they be undocking?
Perfect	V-ing perfect
could I have undocked? could you have undocked? could he have undocked? could we have undocked? could you have undocked? could they have undocked?	could I have been undocking? could you have been undocking? could he have been undocking? could we have been undocking? could you have been undocking? could they have been undocking?

Interro-negative form

Simple form	V-ing form
could I not undock? could you not undock? could he not undock? could we not undock? could you not undock? could they not undock?	could I not be undocking? could you not be undocking? could he not be undocking? could we not be undocking? could you not be undocking? could they not be undocking?
Perfect	V-ing perfect
could I not have undocked? could you not have undocked? could he not have undocked? could we not have undocked? could you not have undocked? could they not have undocked?	could I not have been undocking? could you not have been undocking? could he not have been undocking? could we not have been undocking? could you not have been undocking? could they not have been undocking?