English verb conjugation MUST SWEETEN

Regular verb: sweeten - sweetened - sweetened

Affirmation

Simple form

I must sweeten
you must sweeten
she must sweeten
we must sweeten
you must sweeten
they must sweeten

V-ing form

I must be sweetening
you must be sweetening
she must be sweetening
we must be sweetening
you must be sweetening
they must be sweetening

Perfect

I must have sweetened
you must have sweetened
she 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
she must have been sweetening
we must have been sweetening
you must have been sweetening
they must have been sweetening

Negation

Simple form

I must not sweeten
you must not sweeten
she must not sweeten
we must not sweeten
you must not sweeten
they must not sweeten

V-ing form

I must not be sweetening
you must not be sweetening
she must not be sweetening
we must not be sweetening
you must not be sweetening
they must not be sweetening

Perfect

I must not have sweetened
you must not have sweetened
she must not have sweetened
we must not have sweetened
you must not have sweetened
they must not have sweetened

V-ing perfect

I must not have been sweetening
you must not have been sweetening
she must not have been sweetening
we must not have been sweetening
you must not have been sweetening
they must not have been sweetening

Interrogative form

Simple form

must I sweeten?
must you sweeten?
must she sweeten?
must we sweeten?
must you sweeten?
must they sweeten?

V-ing form

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

Perfect

must I have sweetened?
must you have sweetened?
must she 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 she have been sweetening?
must we have been sweetening?
must you have been sweetening?
must they have been sweetening?

Interro-negative form

Simple form

must I not sweeten?
must you not sweeten?
must she not sweeten?
must we not sweeten?
must you not sweeten?
must they not sweeten?

V-ing form

must I not be sweetening?
must you not be sweetening?
must she not be sweetening?
must we not be sweetening?
must you not be sweetening?
must they not be sweetening?

Perfect

must I not have sweetened?
must you not have sweetened?
must she not have sweetened?
must we not have sweetened?
must you not have sweetened?
must they not have sweetened?

V-ing perfect

must I not have been sweetening?
must you not have been sweetening?
must she not have been sweetening?
must we not have been sweetening?
must you not have been sweetening?
must they not have been sweetening?

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