English verb conjugation MUST FLATTEN

Regular verb: flatten - flattened - flattened

Affirmation

Simple form

I must flatten
you must flatten
he must flatten
we must flatten
you must flatten
they must flatten

V-ing form

I must be flattening
you must be flattening
he must be flattening
we must be flattening
you must be flattening
they must be flattening

Perfect

I must have flattened
you must have flattened
he must have flattened
we must have flattened
you must have flattened
they must have flattened

V-ing perfect

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

Negation

Simple form

I must not flatten
you must not flatten
he must not flatten
we must not flatten
you must not flatten
they must not flatten

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I flatten?
must you flatten?
must he flatten?
must we flatten?
must you flatten?
must they flatten?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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