English verb conjugation MUST SPRING

Irregular verb: spring - sprang, sprung - sprung

Affirmation

Simple form

I must spring
you must spring
she must spring
we must spring
you must spring
they must spring

V-ing form

I must be springing
you must be springing
she must be springing
we must be springing
you must be springing
they must be springing

Perfect

I must have sprung
you must have sprung
she must have sprung
we must have sprung
you must have sprung
they must have sprung

V-ing perfect

I must have been springing
you must have been springing
she must have been springing
we must have been springing
you must have been springing
they must have been springing

Negation

Simple form

I must not spring
you must not spring
she must not spring
we must not spring
you must not spring
they must not spring

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I spring?
must you spring?
must she spring?
must we spring?
must you spring?
must they spring?

V-ing form

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

Perfect

must I have sprung?
must you have sprung?
must she have sprung?
must we have sprung?
must you have sprung?
must they have sprung?

V-ing perfect

must I have been springing?
must you have been springing?
must she have been springing?
must we have been springing?
must you have been springing?
must they have been springing?

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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