English verb conjugation
COULD PROPOSITION

Regular verb: proposition - propositioned - propositioned

Affirmation

Simple form	V-ing form
I could proposition you could proposition he could proposition we could proposition you could proposition they could proposition	I could be propositioning you could be propositioning he could be propositioning we could be propositioning you could be propositioning they could be propositioning
Perfect	V-ing perfect
I could have propositioned you could have propositioned he could have propositioned we could have propositioned you could have propositioned they could have propositioned	I could have been propositioning you could have been propositioning he could have been propositioning we could have been propositioning you could have been propositioning they could have been propositioning

Negation

Simple form	V-ing form
I couldn't proposition you couldn't proposition he couldn't proposition we couldn't proposition you couldn't proposition they couldn't proposition	I couldn't be propositioning you couldn't be propositioning he couldn't be propositioning we couldn't be propositioning you couldn't be propositioning they couldn't be propositioning
Perfect	V-ing perfect
I couldn't have propositioned you couldn't have propositioned he couldn't have propositioned we couldn't have propositioned you couldn't have propositioned they couldn't have propositioned	I couldn't have been propositioning you couldn't have been propositioning he couldn't have been propositioning we couldn't have been propositioning you couldn't have been propositioning they couldn't have been propositioning

Interrogative form

Simple form	V-ing form
could I proposition? could you proposition? could he proposition? could we proposition? could you proposition? could they proposition?	could I be propositioning? could you be propositioning? could he be propositioning? could we be propositioning? could you be propositioning? could they be propositioning?
Perfect	V-ing perfect
could I have propositioned? could you have propositioned? could he have propositioned? could we have propositioned? could you have propositioned? could they have propositioned?	could I have been propositioning? could you have been propositioning? could he have been propositioning? could we have been propositioning? could you have been propositioning? could they have been propositioning?

Interro-negative form

Simple form	V-ing form
couldn't I proposition? couldn't you proposition? couldn't he proposition? couldn't we proposition? couldn't you proposition? couldn't they proposition?	couldn't I be propositioning? couldn't you be propositioning? couldn't he be propositioning? couldn't we be propositioning? couldn't you be propositioning? couldn't they be propositioning?
Perfect	V-ing perfect
couldn't I have propositioned? couldn't you have propositioned? couldn't he have propositioned? couldn't we have propositioned? couldn't you have propositioned? couldn't they have propositioned?	couldn't I have been propositioning? couldn't you have been propositioning? couldn't he have been propositioning? couldn't we have been propositioning? couldn't you have been propositioning? couldn't they have been propositioning?