Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I could docking you could docking he could docking we could docking you could docking they could docking
V-ing form
I could be dockinging you could be dockinging he could be dockinging we could be dockinging you could be dockinging they could be dockinging
Perfect
I could have dockinged you could have dockinged he could have dockinged we could have dockinged you could have dockinged they could have dockinged
V-ing perfect
I could have been dockinging you could have been dockinging he could have been dockinging we could have been dockinging you could have been dockinging they could have been dockinging
Negation
Simple form
I couldn't docking you couldn't docking he couldn't docking we couldn't docking you couldn't docking they couldn't docking
V-ing form
I couldn't be dockinging you couldn't be dockinging he couldn't be dockinging we couldn't be dockinging you couldn't be dockinging they couldn't be dockinging
Perfect
I couldn't have dockinged you couldn't have dockinged he couldn't have dockinged we couldn't have dockinged you couldn't have dockinged they couldn't have dockinged
V-ing perfect
I couldn't have been dockinging you couldn't have been dockinging he couldn't have been dockinging we couldn't have been dockinging you couldn't have been dockinging they couldn't have been dockinging
Interrogative form
Simple form
could I docking? could you docking? could he docking? could we docking? could you docking? could they docking?
V-ing form
could I be dockinging? could you be dockinging? could he be dockinging? could we be dockinging? could you be dockinging? could they be dockinging?
Perfect
could I have dockinged? could you have dockinged? could he have dockinged? could we have dockinged? could you have dockinged? could they have dockinged?
V-ing perfect
could I have been dockinging? could you have been dockinging? could he have been dockinging? could we have been dockinging? could you have been dockinging? could they have been dockinging?
Interro-negative form
Simple form
couldn't I docking? couldn't you docking? couldn't he docking? couldn't we docking? couldn't you docking? couldn't they docking?
V-ing form
couldn't I be dockinging? couldn't you be dockinging? couldn't he be dockinging? couldn't we be dockinging? couldn't you be dockinging? couldn't they be dockinging?
Perfect
couldn't I have dockinged? couldn't you have dockinged? couldn't he have dockinged? couldn't we have dockinged? couldn't you have dockinged? couldn't they have dockinged?
V-ing perfect
couldn't I have been dockinging? couldn't you have been dockinging? couldn't he have been dockinging? couldn't we have been dockinging? couldn't you have been dockinging? couldn't they have been dockinging?