English verb conjugation COULD SUBSTANTIATE

Regular verb: substantiate - substantiated - substantiated

Affirmation

Simple form

I could substantiate
you could substantiate
she could substantiate
we could substantiate
you could substantiate
they could substantiate

V-ing form

I could be substantiating
you could be substantiating
she could be substantiating
we could be substantiating
you could be substantiating
they could be substantiating

Perfect

I could have substantiated
you could have substantiated
she could have substantiated
we could have substantiated
you could have substantiated
they could have substantiated

V-ing perfect

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

Negation

Simple form

I could not substantiate
you could not substantiate
she could not substantiate
we could not substantiate
you could not substantiate
they could not substantiate

V-ing form

I could not be substantiating
you could not be substantiating
she could not be substantiating
we could not be substantiating
you could not be substantiating
they could not be substantiating

Perfect

I could not have substantiated
you could not have substantiated
she could not have substantiated
we could not have substantiated
you could not have substantiated
they could not have substantiated

V-ing perfect

I could not have been substantiating
you could not have been substantiating
she could not have been substantiating
we could not have been substantiating
you could not have been substantiating
they could not have been substantiating

Interrogative form

Simple form

could I substantiate?
could you substantiate?
could she substantiate?
could we substantiate?
could you substantiate?
could they substantiate?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

could I not substantiate?
could you not substantiate?
could she not substantiate?
could we not substantiate?
could you not substantiate?
could they not substantiate?

V-ing form

could I not be substantiating?
could you not be substantiating?
could she not be substantiating?
could we not be substantiating?
could you not be substantiating?
could they not be substantiating?

Perfect

could I not have substantiated?
could you not have substantiated?
could she not have substantiated?
could we not have substantiated?
could you not have substantiated?
could they not have substantiated?

V-ing perfect

could I not have been substantiating?
could you not have been substantiating?
could she not have been substantiating?
could we not have been substantiating?
could you not have been substantiating?
could they not have been substantiating?

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