English verb conjugation MUST HELVE

Regular verb: helve - helved - helved

Affirmation

Simple form

I must helve
you must helve
he must helve
we must helve
you must helve
they must helve

V-ing form

I must be helving
you must be helving
he must be helving
we must be helving
you must be helving
they must be helving

Perfect

I must have helved
you must have helved
he must have helved
we must have helved
you must have helved
they must have helved

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I helve?
must you helve?
must he helve?
must we helve?
must you helve?
must they helve?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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