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