English verb conjugation MUST SPRING

Irregular verb: spring - sprang, sprung - sprung


Affirmation

Simple form

I must spring
you must spring
he must spring
we must spring
you must spring
they must spring

V-ing form

I must be springing
you must be springing
he must be springing
we must be springing
you must be springing
they must be springing

Perfect

I must have sprung
you must have sprung
he 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
he 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
he 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
he 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
he 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
he 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 he spring?
must we spring?
must you spring?
must they spring?

V-ing form

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

Perfect

must I have sprung?
must you have sprung?
must he 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 he 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 he 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 he 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 he 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 he not have been springing?
must we not have been springing?
must you not have been springing?
must they not have been springing?