English verb conjugation MUST SWEETEN

Regular verb: sweeten - sweetened - sweetened

Affirmation

Simple form

I must sweeten
you must sweeten
he must sweeten
we must sweeten
you must sweeten
they must sweeten

V-ing form

I must be sweetening
you must be sweetening
he must be sweetening
we must be sweetening
you must be sweetening
they must be sweetening

Perfect

I must have sweetened
you must have sweetened
he must have sweetened
we must have sweetened
you must have sweetened
they must have sweetened

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I sweeten?
must you sweeten?
must he sweeten?
must we sweeten?
must you sweeten?
must they sweeten?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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