English verb conjugation MUST PRESERVE

Regular verb: preserve - preserved - preserved

Affirmation

Simple form

I must preserve
you must preserve
he must preserve
we must preserve
you must preserve
they must preserve

V-ing form

I must be preserving
you must be preserving
he must be preserving
we must be preserving
you must be preserving
they must be preserving

Perfect

I must have preserved
you must have preserved
he must have preserved
we must have preserved
you must have preserved
they must have preserved

V-ing perfect

I must have been preserving
you must have been preserving
he must have been preserving
we must have been preserving
you must have been preserving
they must have been preserving

Negation

Simple form

I mustn't preserve
you mustn't preserve
he mustn't preserve
we mustn't preserve
you mustn't preserve
they mustn't preserve

V-ing form

I mustn't be preserving
you mustn't be preserving
he mustn't be preserving
we mustn't be preserving
you mustn't be preserving
they mustn't be preserving

Perfect

I mustn't have preserved
you mustn't have preserved
he mustn't have preserved
we mustn't have preserved
you mustn't have preserved
they mustn't have preserved

V-ing perfect

I mustn't have been preserving
you mustn't have been preserving
he mustn't have been preserving
we mustn't have been preserving
you mustn't have been preserving
they mustn't have been preserving

Interrogative form

Simple form

must I preserve?
must you preserve?
must he preserve?
must we preserve?
must you preserve?
must they preserve?

V-ing form

must I be preserving?
must you be preserving?
must he be preserving?
must we be preserving?
must you be preserving?
must they be preserving?

Perfect

must I have preserved?
must you have preserved?
must he have preserved?
must we have preserved?
must you have preserved?
must they have preserved?

V-ing perfect

must I have been preserving?
must you have been preserving?
must he have been preserving?
must we have been preserving?
must you have been preserving?
must they have been preserving?

Interro-negative form

Simple form

mustn't I preserve?
mustn't you preserve?
mustn't he preserve?
mustn't we preserve?
mustn't you preserve?
mustn't they preserve?

V-ing form

mustn't I be preserving?
mustn't you be preserving?
mustn't he be preserving?
mustn't we be preserving?
mustn't you be preserving?
mustn't they be preserving?

Perfect

mustn't I have preserved?
mustn't you have preserved?
mustn't he have preserved?
mustn't we have preserved?
mustn't you have preserved?
mustn't they have preserved?

V-ing perfect

mustn't I have been preserving?
mustn't you have been preserving?
mustn't he have been preserving?
mustn't we have been preserving?
mustn't you have been preserving?
mustn't they have been preserving?

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