English verb conjugation MUST NIGGLE

Regular verb: niggle - niggled - niggled

Affirmation

Simple form

I must niggle
you must niggle
he must niggle
we must niggle
you must niggle
they must niggle

V-ing form

I must be niggling
you must be niggling
he must be niggling
we must be niggling
you must be niggling
they must be niggling

Perfect

I must have niggled
you must have niggled
he must have niggled
we must have niggled
you must have niggled
they must have niggled

V-ing perfect

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

Negation

Simple form

I must not niggle
you must not niggle
he must not niggle
we must not niggle
you must not niggle
they must not niggle

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I niggle?
must you niggle?
must he niggle?
must we niggle?
must you niggle?
must they niggle?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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