English verb conjugation
COULD SULK

Regular verb: sulk - sulked - sulked

Affirmation

Simple form	V-ing form
I could sulk you could sulk he could sulk we could sulk you could sulk they could sulk	I could be sulking you could be sulking he could be sulking we could be sulking you could be sulking they could be sulking
Perfect	V-ing perfect
I could have sulked you could have sulked he could have sulked we could have sulked you could have sulked they could have sulked	I could have been sulking you could have been sulking he could have been sulking we could have been sulking you could have been sulking they could have been sulking

Negation

Simple form	V-ing form
I couldn't sulk you couldn't sulk he couldn't sulk we couldn't sulk you couldn't sulk they couldn't sulk	I couldn't be sulking you couldn't be sulking he couldn't be sulking we couldn't be sulking you couldn't be sulking they couldn't be sulking
Perfect	V-ing perfect
I couldn't have sulked you couldn't have sulked he couldn't have sulked we couldn't have sulked you couldn't have sulked they couldn't have sulked	I couldn't have been sulking you couldn't have been sulking he couldn't have been sulking we couldn't have been sulking you couldn't have been sulking they couldn't have been sulking

Interrogative form

Simple form	V-ing form
could I sulk? could you sulk? could he sulk? could we sulk? could you sulk? could they sulk?	could I be sulking? could you be sulking? could he be sulking? could we be sulking? could you be sulking? could they be sulking?
Perfect	V-ing perfect
could I have sulked? could you have sulked? could he have sulked? could we have sulked? could you have sulked? could they have sulked?	could I have been sulking? could you have been sulking? could he have been sulking? could we have been sulking? could you have been sulking? could they have been sulking?

Interro-negative form

Simple form	V-ing form
couldn't I sulk? couldn't you sulk? couldn't he sulk? couldn't we sulk? couldn't you sulk? couldn't they sulk?	couldn't I be sulking? couldn't you be sulking? couldn't he be sulking? couldn't we be sulking? couldn't you be sulking? couldn't they be sulking?
Perfect	V-ing perfect
couldn't I have sulked? couldn't you have sulked? couldn't he have sulked? couldn't we have sulked? couldn't you have sulked? couldn't they have sulked?	couldn't I have been sulking? couldn't you have been sulking? couldn't he have been sulking? couldn't we have been sulking? couldn't you have been sulking? couldn't they have been sulking?