English verb conjugation
COULD SCLAFF

Regular verb: sclaff - sclaffed - sclaffed

Affirmation

Simple form	V-ing form
I could sclaff you could sclaff he could sclaff we could sclaff you could sclaff they could sclaff	I could be sclaffing you could be sclaffing he could be sclaffing we could be sclaffing you could be sclaffing they could be sclaffing
Perfect	V-ing perfect
I could have sclaffed you could have sclaffed he could have sclaffed we could have sclaffed you could have sclaffed they could have sclaffed	I could have been sclaffing you could have been sclaffing he could have been sclaffing we could have been sclaffing you could have been sclaffing they could have been sclaffing

Negation

Simple form	V-ing form
I couldn't sclaff you couldn't sclaff he couldn't sclaff we couldn't sclaff you couldn't sclaff they couldn't sclaff	I couldn't be sclaffing you couldn't be sclaffing he couldn't be sclaffing we couldn't be sclaffing you couldn't be sclaffing they couldn't be sclaffing
Perfect	V-ing perfect
I couldn't have sclaffed you couldn't have sclaffed he couldn't have sclaffed we couldn't have sclaffed you couldn't have sclaffed they couldn't have sclaffed	I couldn't have been sclaffing you couldn't have been sclaffing he couldn't have been sclaffing we couldn't have been sclaffing you couldn't have been sclaffing they couldn't have been sclaffing

Interrogative form

Simple form	V-ing form
could I sclaff? could you sclaff? could he sclaff? could we sclaff? could you sclaff? could they sclaff?	could I be sclaffing? could you be sclaffing? could he be sclaffing? could we be sclaffing? could you be sclaffing? could they be sclaffing?
Perfect	V-ing perfect
could I have sclaffed? could you have sclaffed? could he have sclaffed? could we have sclaffed? could you have sclaffed? could they have sclaffed?	could I have been sclaffing? could you have been sclaffing? could he have been sclaffing? could we have been sclaffing? could you have been sclaffing? could they have been sclaffing?

Interro-negative form

Simple form	V-ing form
couldn't I sclaff? couldn't you sclaff? couldn't he sclaff? couldn't we sclaff? couldn't you sclaff? couldn't they sclaff?	couldn't I be sclaffing? couldn't you be sclaffing? couldn't he be sclaffing? couldn't we be sclaffing? couldn't you be sclaffing? couldn't they be sclaffing?
Perfect	V-ing perfect
couldn't I have sclaffed? couldn't you have sclaffed? couldn't he have sclaffed? couldn't we have sclaffed? couldn't you have sclaffed? couldn't they have sclaffed?	couldn't I have been sclaffing? couldn't you have been sclaffing? couldn't he have been sclaffing? couldn't we have been sclaffing? couldn't you have been sclaffing? couldn't they have been sclaffing?