English verb conjugation
CAN UNDOCK

Regular verb: undock - undocked - undocked

Affirmation

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

Negation

Simple form	V-ing form
I can't undock you can't undock he can't undock we can't undock you can't undock they can't undock	I can't be undocking you can't be undocking he can't be undocking we can't be undocking you can't be undocking they can't be undocking
Perfect	V-ing perfect
I can't have undocked you can't have undocked he can't have undocked we can't have undocked you can't have undocked they can't have undocked	I can't have been undocking you can't have been undocking he can't have been undocking we can't have been undocking you can't have been undocking they can't have been undocking

Interrogative form

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

Interro-negative form

Simple form	V-ing form
can't I undock? can't you undock? can't he undock? can't we undock? can't you undock? can't they undock?	can't I be undocking? can't you be undocking? can't he be undocking? can't we be undocking? can't you be undocking? can't they be undocking?
Perfect	V-ing perfect
can't I have undocked? can't you have undocked? can't he have undocked? can't we have undocked? can't you have undocked? can't they have undocked?	can't I have been undocking? can't you have been undocking? can't he have been undocking? can't we have been undocking? can't you have been undocking? can't they have been undocking?