English verb conjugation
COULD FUSS

Regular verb: fuss - fussed - fussed

Affirmation

Simple form	V-ing form
I could fuss you could fuss he could fuss we could fuss you could fuss they could fuss	I could be fussing you could be fussing he could be fussing we could be fussing you could be fussing they could be fussing
Perfect	V-ing perfect
I could have fussed you could have fussed he could have fussed we could have fussed you could have fussed they could have fussed	I could have been fussing you could have been fussing he could have been fussing we could have been fussing you could have been fussing they could have been fussing

Negation

Simple form	V-ing form
I couldn't fuss you couldn't fuss he couldn't fuss we couldn't fuss you couldn't fuss they couldn't fuss	I couldn't be fussing you couldn't be fussing he couldn't be fussing we couldn't be fussing you couldn't be fussing they couldn't be fussing
Perfect	V-ing perfect
I couldn't have fussed you couldn't have fussed he couldn't have fussed we couldn't have fussed you couldn't have fussed they couldn't have fussed	I couldn't have been fussing you couldn't have been fussing he couldn't have been fussing we couldn't have been fussing you couldn't have been fussing they couldn't have been fussing

Interrogative form

Simple form	V-ing form
could I fuss? could you fuss? could he fuss? could we fuss? could you fuss? could they fuss?	could I be fussing? could you be fussing? could he be fussing? could we be fussing? could you be fussing? could they be fussing?
Perfect	V-ing perfect
could I have fussed? could you have fussed? could he have fussed? could we have fussed? could you have fussed? could they have fussed?	could I have been fussing? could you have been fussing? could he have been fussing? could we have been fussing? could you have been fussing? could they have been fussing?

Interro-negative form

Simple form	V-ing form
couldn't I fuss? couldn't you fuss? couldn't he fuss? couldn't we fuss? couldn't you fuss? couldn't they fuss?	couldn't I be fussing? couldn't you be fussing? couldn't he be fussing? couldn't we be fussing? couldn't you be fussing? couldn't they be fussing?
Perfect	V-ing perfect
couldn't I have fussed? couldn't you have fussed? couldn't he have fussed? couldn't we have fussed? couldn't you have fussed? couldn't they have fussed?	couldn't I have been fussing? couldn't you have been fussing? couldn't he have been fussing? couldn't we have been fussing? couldn't you have been fussing? couldn't they have been fussing?