English verb conjugation
CAN DOCK

Regular verb: dock - docked - docked

Affirmation

Simple form	V-ing form
I can dock you can dock he can dock we can dock you can dock they can dock	I can be docking you can be docking he can be docking we can be docking you can be docking they can be docking
Perfect	V-ing perfect
I can have docked you can have docked he can have docked we can have docked you can have docked they can have docked	I can have been docking you can have been docking he can have been docking we can have been docking you can have been docking they can have been docking

Negation

Simple form	V-ing form
I can't dock you can't dock he can't dock we can't dock you can't dock they can't dock	I can't be docking you can't be docking he can't be docking we can't be docking you can't be docking they can't be docking
Perfect	V-ing perfect
I can't have docked you can't have docked he can't have docked we can't have docked you can't have docked they can't have docked	I can't have been docking you can't have been docking he can't have been docking we can't have been docking you can't have been docking they can't have been docking

Interrogative form

Simple form	V-ing form
can I dock? can you dock? can he dock? can we dock? can you dock? can they dock?	can I be docking? can you be docking? can he be docking? can we be docking? can you be docking? can they be docking?
Perfect	V-ing perfect
can I have docked? can you have docked? can he have docked? can we have docked? can you have docked? can they have docked?	can I have been docking? can you have been docking? can he have been docking? can we have been docking? can you have been docking? can they have been docking?

Interro-negative form

Simple form	V-ing form
can't I dock? can't you dock? can't he dock? can't we dock? can't you dock? can't they dock?	can't I be docking? can't you be docking? can't he be docking? can't we be docking? can't you be docking? can't they be docking?
Perfect	V-ing perfect
can't I have docked? can't you have docked? can't he have docked? can't we have docked? can't you have docked? can't they have docked?	can't I have been docking? can't you have been docking? can't he have been docking? can't we have been docking? can't you have been docking? can't they have been docking?