English verb conjugation
COULD IRIS

Regular verb: iris - irised - irised

Affirmation

Simple form	V-ing form
I could iris you could iris she could iris we could iris you could iris they could iris	I could be irising you could be irising she could be irising we could be irising you could be irising they could be irising
Perfect	V-ing perfect
I could have irised you could have irised she could have irised we could have irised you could have irised they could have irised	I could have been irising you could have been irising she could have been irising we could have been irising you could have been irising they could have been irising

Negation

Simple form	V-ing form
I couldn't iris you couldn't iris she couldn't iris we couldn't iris you couldn't iris they couldn't iris	I couldn't be irising you couldn't be irising she couldn't be irising we couldn't be irising you couldn't be irising they couldn't be irising
Perfect	V-ing perfect
I couldn't have irised you couldn't have irised she couldn't have irised we couldn't have irised you couldn't have irised they couldn't have irised	I couldn't have been irising you couldn't have been irising she couldn't have been irising we couldn't have been irising you couldn't have been irising they couldn't have been irising

Interrogative form

Simple form	V-ing form
could I iris? could you iris? could she iris? could we iris? could you iris? could they iris?	could I be irising? could you be irising? could she be irising? could we be irising? could you be irising? could they be irising?
Perfect	V-ing perfect
could I have irised? could you have irised? could she have irised? could we have irised? could you have irised? could they have irised?	could I have been irising? could you have been irising? could she have been irising? could we have been irising? could you have been irising? could they have been irising?

Interro-negative form

Simple form	V-ing form
couldn't I iris? couldn't you iris? couldn't she iris? couldn't we iris? couldn't you iris? couldn't they iris?	couldn't I be irising? couldn't you be irising? couldn't she be irising? couldn't we be irising? couldn't you be irising? couldn't they be irising?
Perfect	V-ing perfect
couldn't I have irised? couldn't you have irised? couldn't she have irised? couldn't we have irised? couldn't you have irised? couldn't they have irised?	couldn't I have been irising? couldn't you have been irising? couldn't she have been irising? couldn't we have been irising? couldn't you have been irising? couldn't they have been irising?