English verb conjugation
COULD WINK

Regular verb: wink - winked - winked

Affirmation

Simple form	V-ing form
I could wink you could wink he could wink we could wink you could wink they could wink	I could be winking you could be winking he could be winking we could be winking you could be winking they could be winking
Perfect	V-ing perfect
I could have winked you could have winked he could have winked we could have winked you could have winked they could have winked	I could have been winking you could have been winking he could have been winking we could have been winking you could have been winking they could have been winking

Negation

Simple form	V-ing form
I couldn't wink you couldn't wink he couldn't wink we couldn't wink you couldn't wink they couldn't wink	I couldn't be winking you couldn't be winking he couldn't be winking we couldn't be winking you couldn't be winking they couldn't be winking
Perfect	V-ing perfect
I couldn't have winked you couldn't have winked he couldn't have winked we couldn't have winked you couldn't have winked they couldn't have winked	I couldn't have been winking you couldn't have been winking he couldn't have been winking we couldn't have been winking you couldn't have been winking they couldn't have been winking

Interrogative form

Simple form	V-ing form
could I wink? could you wink? could he wink? could we wink? could you wink? could they wink?	could I be winking? could you be winking? could he be winking? could we be winking? could you be winking? could they be winking?
Perfect	V-ing perfect
could I have winked? could you have winked? could he have winked? could we have winked? could you have winked? could they have winked?	could I have been winking? could you have been winking? could he have been winking? could we have been winking? could you have been winking? could they have been winking?

Interro-negative form

Simple form	V-ing form
couldn't I wink? couldn't you wink? couldn't he wink? couldn't we wink? couldn't you wink? couldn't they wink?	couldn't I be winking? couldn't you be winking? couldn't he be winking? couldn't we be winking? couldn't you be winking? couldn't they be winking?
Perfect	V-ing perfect
couldn't I have winked? couldn't you have winked? couldn't he have winked? couldn't we have winked? couldn't you have winked? couldn't they have winked?	couldn't I have been winking? couldn't you have been winking? couldn't he have been winking? couldn't we have been winking? couldn't you have been winking? couldn't they have been winking?