English verb conjugation
COULD ENVELOP

Regular verb: envelop - enveloped - enveloped

Affirmation

Simple form	V-ing form
I could envelop you could envelop she could envelop we could envelop you could envelop they could envelop	I could be enveloping you could be enveloping she could be enveloping we could be enveloping you could be enveloping they could be enveloping
Perfect	V-ing perfect
I could have enveloped you could have enveloped she could have enveloped we could have enveloped you could have enveloped they could have enveloped	I could have been enveloping you could have been enveloping she could have been enveloping we could have been enveloping you could have been enveloping they could have been enveloping

Negation

Simple form	V-ing form
I could not envelop you could not envelop she could not envelop we could not envelop you could not envelop they could not envelop	I could not be enveloping you could not be enveloping she could not be enveloping we could not be enveloping you could not be enveloping they could not be enveloping
Perfect	V-ing perfect
I could not have enveloped you could not have enveloped she could not have enveloped we could not have enveloped you could not have enveloped they could not have enveloped	I could not have been enveloping you could not have been enveloping she could not have been enveloping we could not have been enveloping you could not have been enveloping they could not have been enveloping

Interrogative form

Simple form	V-ing form
could I envelop? could you envelop? could she envelop? could we envelop? could you envelop? could they envelop?	could I be enveloping? could you be enveloping? could she be enveloping? could we be enveloping? could you be enveloping? could they be enveloping?
Perfect	V-ing perfect
could I have enveloped? could you have enveloped? could she have enveloped? could we have enveloped? could you have enveloped? could they have enveloped?	could I have been enveloping? could you have been enveloping? could she have been enveloping? could we have been enveloping? could you have been enveloping? could they have been enveloping?

Interro-negative form

Simple form	V-ing form
could I not envelop? could you not envelop? could she not envelop? could we not envelop? could you not envelop? could they not envelop?	could I not be enveloping? could you not be enveloping? could she not be enveloping? could we not be enveloping? could you not be enveloping? could they not be enveloping?
Perfect	V-ing perfect
could I not have enveloped? could you not have enveloped? could she not have enveloped? could we not have enveloped? could you not have enveloped? could they not have enveloped?	could I not have been enveloping? could you not have been enveloping? could she not have been enveloping? could we not have been enveloping? could you not have been enveloping? could they not have been enveloping?