English verb conjugation
COULD GULL

Regular verb: gull - gulled - gulled

Affirmation

Simple form	V-ing form
I could gull you could gull he could gull we could gull you could gull they could gull	I could be gulling you could be gulling he could be gulling we could be gulling you could be gulling they could be gulling
Perfect	V-ing perfect
I could have gulled you could have gulled he could have gulled we could have gulled you could have gulled they could have gulled	I could have been gulling you could have been gulling he could have been gulling we could have been gulling you could have been gulling they could have been gulling

Negation

Simple form	V-ing form
I couldn't gull you couldn't gull he couldn't gull we couldn't gull you couldn't gull they couldn't gull	I couldn't be gulling you couldn't be gulling he couldn't be gulling we couldn't be gulling you couldn't be gulling they couldn't be gulling
Perfect	V-ing perfect
I couldn't have gulled you couldn't have gulled he couldn't have gulled we couldn't have gulled you couldn't have gulled they couldn't have gulled	I couldn't have been gulling you couldn't have been gulling he couldn't have been gulling we couldn't have been gulling you couldn't have been gulling they couldn't have been gulling

Interrogative form

Simple form	V-ing form
could I gull? could you gull? could he gull? could we gull? could you gull? could they gull?	could I be gulling? could you be gulling? could he be gulling? could we be gulling? could you be gulling? could they be gulling?
Perfect	V-ing perfect
could I have gulled? could you have gulled? could he have gulled? could we have gulled? could you have gulled? could they have gulled?	could I have been gulling? could you have been gulling? could he have been gulling? could we have been gulling? could you have been gulling? could they have been gulling?

Interro-negative form

Simple form	V-ing form
couldn't I gull? couldn't you gull? couldn't he gull? couldn't we gull? couldn't you gull? couldn't they gull?	couldn't I be gulling? couldn't you be gulling? couldn't he be gulling? couldn't we be gulling? couldn't you be gulling? couldn't they be gulling?
Perfect	V-ing perfect
couldn't I have gulled? couldn't you have gulled? couldn't he have gulled? couldn't we have gulled? couldn't you have gulled? couldn't they have gulled?	couldn't I have been gulling? couldn't you have been gulling? couldn't he have been gulling? couldn't we have been gulling? couldn't you have been gulling? couldn't they have been gulling?