English verb conjugation MUST KO

Regular verb: ko - koed - koed

Affirmation

Simple form

I must ko
you must ko
he must ko
we must ko
you must ko
they must ko

V-ing form

I must be koing
you must be koing
he must be koing
we must be koing
you must be koing
they must be koing

Perfect

I must have koed
you must have koed
he must have koed
we must have koed
you must have koed
they must have koed

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I ko?
must you ko?
must he ko?
must we ko?
must you ko?
must they ko?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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