English verb conjugation COULD INTERGRADE

Regular verb: intergrade - intergraded - intergraded

Affirmation

Simple form

I could intergrade
you could intergrade
she could intergrade
we could intergrade
you could intergrade
they could intergrade

V-ing form

I could be intergrading
you could be intergrading
she could be intergrading
we could be intergrading
you could be intergrading
they could be intergrading

Perfect

I could have intergraded
you could have intergraded
she could have intergraded
we could have intergraded
you could have intergraded
they could have intergraded

V-ing perfect

I could have been intergrading
you could have been intergrading
she could have been intergrading
we could have been intergrading
you could have been intergrading
they could have been intergrading

Negation

Simple form

I couldn't intergrade
you couldn't intergrade
she couldn't intergrade
we couldn't intergrade
you couldn't intergrade
they couldn't intergrade

V-ing form

I couldn't be intergrading
you couldn't be intergrading
she couldn't be intergrading
we couldn't be intergrading
you couldn't be intergrading
they couldn't be intergrading

Perfect

I couldn't have intergraded
you couldn't have intergraded
she couldn't have intergraded
we couldn't have intergraded
you couldn't have intergraded
they couldn't have intergraded

V-ing perfect

I couldn't have been intergrading
you couldn't have been intergrading
she couldn't have been intergrading
we couldn't have been intergrading
you couldn't have been intergrading
they couldn't have been intergrading

Interrogative form

Simple form

could I intergrade?
could you intergrade?
could she intergrade?
could we intergrade?
could you intergrade?
could they intergrade?

V-ing form

could I be intergrading?
could you be intergrading?
could she be intergrading?
could we be intergrading?
could you be intergrading?
could they be intergrading?

Perfect

could I have intergraded?
could you have intergraded?
could she have intergraded?
could we have intergraded?
could you have intergraded?
could they have intergraded?

V-ing perfect

could I have been intergrading?
could you have been intergrading?
could she have been intergrading?
could we have been intergrading?
could you have been intergrading?
could they have been intergrading?

Interro-negative form

Simple form

couldn't I intergrade?
couldn't you intergrade?
couldn't she intergrade?
couldn't we intergrade?
couldn't you intergrade?
couldn't they intergrade?

V-ing form

couldn't I be intergrading?
couldn't you be intergrading?
couldn't she be intergrading?
couldn't we be intergrading?
couldn't you be intergrading?
couldn't they be intergrading?

Perfect

couldn't I have intergraded?
couldn't you have intergraded?
couldn't she have intergraded?
couldn't we have intergraded?
couldn't you have intergraded?
couldn't they have intergraded?

V-ing perfect

couldn't I have been intergrading?
couldn't you have been intergrading?
couldn't she have been intergrading?
couldn't we have been intergrading?
couldn't you have been intergrading?
couldn't they have been intergrading?

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