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 must not helve
you must not helve
he must not helve
we must not helve
you must not helve
they must not helve

V-ing form

I must not be helving
you must not be helving
he must not be helving
we must not be helving
you must not be helving
they must not be helving

Perfect

I must not have helved
you must not have helved
he must not have helved
we must not have helved
you must not have helved
they must not have helved

V-ing perfect

I must not have been helving
you must not have been helving
he must not have been helving
we must not have been helving
you must not have been helving
they must not 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

must I not helve?
must you not helve?
must he not helve?
must we not helve?
must you not helve?
must they not helve?

V-ing form

must I not be helving?
must you not be helving?
must he not be helving?
must we not be helving?
must you not be helving?
must they not be helving?

Perfect

must I not have helved?
must you not have helved?
must he not have helved?
must we not have helved?
must you not have helved?
must they not have helved?

V-ing perfect

must I not have been helving?
must you not have been helving?
must he not have been helving?
must we not have been helving?
must you not have been helving?
must they not have been helving?

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