English verb conjugation MUST FIFE

Regular verb: fife - fifed - fifed

Affirmation

Simple form

I must fife
you must fife
she must fife
we must fife
you must fife
they must fife

V-ing form

I must be fifing
you must be fifing
she must be fifing
we must be fifing
you must be fifing
they must be fifing

Perfect

I must have fifed
you must have fifed
she must have fifed
we must have fifed
you must have fifed
they must have fifed

V-ing perfect

I must have been fifing
you must have been fifing
she must have been fifing
we must have been fifing
you must have been fifing
they must have been fifing

Negation

Simple form

I must not fife
you must not fife
she must not fife
we must not fife
you must not fife
they must not fife

V-ing form

I must not be fifing
you must not be fifing
she must not be fifing
we must not be fifing
you must not be fifing
they must not be fifing

Perfect

I must not have fifed
you must not have fifed
she must not have fifed
we must not have fifed
you must not have fifed
they must not have fifed

V-ing perfect

I must not have been fifing
you must not have been fifing
she must not have been fifing
we must not have been fifing
you must not have been fifing
they must not have been fifing

Interrogative form

Simple form

must I fife?
must you fife?
must she fife?
must we fife?
must you fife?
must they fife?

V-ing form

must I be fifing?
must you be fifing?
must she be fifing?
must we be fifing?
must you be fifing?
must they be fifing?

Perfect

must I have fifed?
must you have fifed?
must she have fifed?
must we have fifed?
must you have fifed?
must they have fifed?

V-ing perfect

must I have been fifing?
must you have been fifing?
must she have been fifing?
must we have been fifing?
must you have been fifing?
must they have been fifing?

Interro-negative form

Simple form

must I not fife?
must you not fife?
must she not fife?
must we not fife?
must you not fife?
must they not fife?

V-ing form

must I not be fifing?
must you not be fifing?
must she not be fifing?
must we not be fifing?
must you not be fifing?
must they not be fifing?

Perfect

must I not have fifed?
must you not have fifed?
must she not have fifed?
must we not have fifed?
must you not have fifed?
must they not have fifed?

V-ing perfect

must I not have been fifing?
must you not have been fifing?
must she not have been fifing?
must we not have been fifing?
must you not have been fifing?
must they not have been fifing?

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