English verb conjugation
COULD PREWEIGH

Regular verb: preweigh - preweighed - preweighed

Affirmation

Simple form	V-ing form
I could preweigh you could preweigh he could preweigh we could preweigh you could preweigh they could preweigh	I could be preweighing you could be preweighing he could be preweighing we could be preweighing you could be preweighing they could be preweighing
Perfect	V-ing perfect
I could have preweighed you could have preweighed he could have preweighed we could have preweighed you could have preweighed they could have preweighed	I could have been preweighing you could have been preweighing he could have been preweighing we could have been preweighing you could have been preweighing they could have been preweighing

Negation

Simple form	V-ing form
I could not preweigh you could not preweigh he could not preweigh we could not preweigh you could not preweigh they could not preweigh	I could not be preweighing you could not be preweighing he could not be preweighing we could not be preweighing you could not be preweighing they could not be preweighing
Perfect	V-ing perfect
I could not have preweighed you could not have preweighed he could not have preweighed we could not have preweighed you could not have preweighed they could not have preweighed	I could not have been preweighing you could not have been preweighing he could not have been preweighing we could not have been preweighing you could not have been preweighing they could not have been preweighing

Interrogative form

Simple form	V-ing form
could I preweigh? could you preweigh? could he preweigh? could we preweigh? could you preweigh? could they preweigh?	could I be preweighing? could you be preweighing? could he be preweighing? could we be preweighing? could you be preweighing? could they be preweighing?
Perfect	V-ing perfect
could I have preweighed? could you have preweighed? could he have preweighed? could we have preweighed? could you have preweighed? could they have preweighed?	could I have been preweighing? could you have been preweighing? could he have been preweighing? could we have been preweighing? could you have been preweighing? could they have been preweighing?

Interro-negative form

Simple form	V-ing form
could I not preweigh? could you not preweigh? could he not preweigh? could we not preweigh? could you not preweigh? could they not preweigh?	could I not be preweighing? could you not be preweighing? could he not be preweighing? could we not be preweighing? could you not be preweighing? could they not be preweighing?
Perfect	V-ing perfect
could I not have preweighed? could you not have preweighed? could he not have preweighed? could we not have preweighed? could you not have preweighed? could they not have preweighed?	could I not have been preweighing? could you not have been preweighing? could he not have been preweighing? could we not have been preweighing? could you not have been preweighing? could they not have been preweighing?