English verb conjugation
COULD QUADRATE

Regular verb: quadrate - quadrated - quadrated

Affirmation

Simple form	V-ing form
I could quadrate you could quadrate he could quadrate we could quadrate you could quadrate they could quadrate	I could be quadrating you could be quadrating he could be quadrating we could be quadrating you could be quadrating they could be quadrating
Perfect	V-ing perfect
I could have quadrated you could have quadrated he could have quadrated we could have quadrated you could have quadrated they could have quadrated	I could have been quadrating you could have been quadrating he could have been quadrating we could have been quadrating you could have been quadrating they could have been quadrating

Negation

Simple form	V-ing form
I couldn't quadrate you couldn't quadrate he couldn't quadrate we couldn't quadrate you couldn't quadrate they couldn't quadrate	I couldn't be quadrating you couldn't be quadrating he couldn't be quadrating we couldn't be quadrating you couldn't be quadrating they couldn't be quadrating
Perfect	V-ing perfect
I couldn't have quadrated you couldn't have quadrated he couldn't have quadrated we couldn't have quadrated you couldn't have quadrated they couldn't have quadrated	I couldn't have been quadrating you couldn't have been quadrating he couldn't have been quadrating we couldn't have been quadrating you couldn't have been quadrating they couldn't have been quadrating

Interrogative form

Simple form	V-ing form
could I quadrate? could you quadrate? could he quadrate? could we quadrate? could you quadrate? could they quadrate?	could I be quadrating? could you be quadrating? could he be quadrating? could we be quadrating? could you be quadrating? could they be quadrating?
Perfect	V-ing perfect
could I have quadrated? could you have quadrated? could he have quadrated? could we have quadrated? could you have quadrated? could they have quadrated?	could I have been quadrating? could you have been quadrating? could he have been quadrating? could we have been quadrating? could you have been quadrating? could they have been quadrating?

Interro-negative form

Simple form	V-ing form
couldn't I quadrate? couldn't you quadrate? couldn't he quadrate? couldn't we quadrate? couldn't you quadrate? couldn't they quadrate?	couldn't I be quadrating? couldn't you be quadrating? couldn't he be quadrating? couldn't we be quadrating? couldn't you be quadrating? couldn't they be quadrating?
Perfect	V-ing perfect
couldn't I have quadrated? couldn't you have quadrated? couldn't he have quadrated? couldn't we have quadrated? couldn't you have quadrated? couldn't they have quadrated?	couldn't I have been quadrating? couldn't you have been quadrating? couldn't he have been quadrating? couldn't we have been quadrating? couldn't you have been quadrating? couldn't they have been quadrating?