English verb conjugation
COULD SMIRK

Regular verb: smirk - smirked - smirked

Affirmation

Simple form	V-ing form
I could smirk you could smirk he could smirk we could smirk you could smirk they could smirk	I could be smirking you could be smirking he could be smirking we could be smirking you could be smirking they could be smirking
Perfect	V-ing perfect
I could have smirked you could have smirked he could have smirked we could have smirked you could have smirked they could have smirked	I could have been smirking you could have been smirking he could have been smirking we could have been smirking you could have been smirking they could have been smirking

Negation

Simple form	V-ing form
I couldn't smirk you couldn't smirk he couldn't smirk we couldn't smirk you couldn't smirk they couldn't smirk	I couldn't be smirking you couldn't be smirking he couldn't be smirking we couldn't be smirking you couldn't be smirking they couldn't be smirking
Perfect	V-ing perfect
I couldn't have smirked you couldn't have smirked he couldn't have smirked we couldn't have smirked you couldn't have smirked they couldn't have smirked	I couldn't have been smirking you couldn't have been smirking he couldn't have been smirking we couldn't have been smirking you couldn't have been smirking they couldn't have been smirking

Interrogative form

Simple form	V-ing form
could I smirk? could you smirk? could he smirk? could we smirk? could you smirk? could they smirk?	could I be smirking? could you be smirking? could he be smirking? could we be smirking? could you be smirking? could they be smirking?
Perfect	V-ing perfect
could I have smirked? could you have smirked? could he have smirked? could we have smirked? could you have smirked? could they have smirked?	could I have been smirking? could you have been smirking? could he have been smirking? could we have been smirking? could you have been smirking? could they have been smirking?

Interro-negative form

Simple form	V-ing form
couldn't I smirk? couldn't you smirk? couldn't he smirk? couldn't we smirk? couldn't you smirk? couldn't they smirk?	couldn't I be smirking? couldn't you be smirking? couldn't he be smirking? couldn't we be smirking? couldn't you be smirking? couldn't they be smirking?
Perfect	V-ing perfect
couldn't I have smirked? couldn't you have smirked? couldn't he have smirked? couldn't we have smirked? couldn't you have smirked? couldn't they have smirked?	couldn't I have been smirking? couldn't you have been smirking? couldn't he have been smirking? couldn't we have been smirking? couldn't you have been smirking? couldn't they have been smirking?