English verb conjugation COULD QUAFF

Regular verb: quaff - quaffed - quaffed

Affirmation

Simple form

I could quaff
you could quaff
she could quaff
we could quaff
you could quaff
they could quaff

V-ing form

I could be quaffing
you could be quaffing
she could be quaffing
we could be quaffing
you could be quaffing
they could be quaffing

Perfect

I could have quaffed
you could have quaffed
she could have quaffed
we could have quaffed
you could have quaffed
they could have quaffed

V-ing perfect

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

Negation

Simple form

I could not quaff
you could not quaff
she could not quaff
we could not quaff
you could not quaff
they could not quaff

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I quaff?
could you quaff?
could she quaff?
could we quaff?
could you quaff?
could they quaff?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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