English verb conjugation COULD UNDERTAKE

Irregular verb: undertake - undertook - undertaken

Affirmation

Simple form

I could undertake
you could undertake
she could undertake
we could undertake
you could undertake
they could undertake

V-ing form

I could be undertaking
you could be undertaking
she could be undertaking
we could be undertaking
you could be undertaking
they could be undertaking

Perfect

I could have undertaken
you could have undertaken
she could have undertaken
we could have undertaken
you could have undertaken
they could have undertaken

V-ing perfect

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

Negation

Simple form

I could not undertake
you could not undertake
she could not undertake
we could not undertake
you could not undertake
they could not undertake

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I undertake?
could you undertake?
could she undertake?
could we undertake?
could you undertake?
could they undertake?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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