English verb conjugation
COULD CONGEST

Regular verb: congest - congested - congested

Affirmation

Simple form	V-ing form
I could congest you could congest she could congest we could congest you could congest they could congest	I could be congesting you could be congesting she could be congesting we could be congesting you could be congesting they could be congesting
Perfect	V-ing perfect
I could have congested you could have congested she could have congested we could have congested you could have congested they could have congested	I could have been congesting you could have been congesting she could have been congesting we could have been congesting you could have been congesting they could have been congesting

Negation

Simple form	V-ing form
I couldn't congest you couldn't congest she couldn't congest we couldn't congest you couldn't congest they couldn't congest	I couldn't be congesting you couldn't be congesting she couldn't be congesting we couldn't be congesting you couldn't be congesting they couldn't be congesting
Perfect	V-ing perfect
I couldn't have congested you couldn't have congested she couldn't have congested we couldn't have congested you couldn't have congested they couldn't have congested	I couldn't have been congesting you couldn't have been congesting she couldn't have been congesting we couldn't have been congesting you couldn't have been congesting they couldn't have been congesting

Interrogative form

Simple form	V-ing form
could I congest? could you congest? could she congest? could we congest? could you congest? could they congest?	could I be congesting? could you be congesting? could she be congesting? could we be congesting? could you be congesting? could they be congesting?
Perfect	V-ing perfect
could I have congested? could you have congested? could she have congested? could we have congested? could you have congested? could they have congested?	could I have been congesting? could you have been congesting? could she have been congesting? could we have been congesting? could you have been congesting? could they have been congesting?

Interro-negative form

Simple form	V-ing form
couldn't I congest? couldn't you congest? couldn't she congest? couldn't we congest? couldn't you congest? couldn't they congest?	couldn't I be congesting? couldn't you be congesting? couldn't she be congesting? couldn't we be congesting? couldn't you be congesting? couldn't they be congesting?
Perfect	V-ing perfect
couldn't I have congested? couldn't you have congested? couldn't she have congested? couldn't we have congested? couldn't you have congested? couldn't they have congested?	couldn't I have been congesting? couldn't you have been congesting? couldn't she have been congesting? couldn't we have been congesting? couldn't you have been congesting? couldn't they have been congesting?