English verb conjugation MUST STALE

Regular verb: stale - staled - staled

Affirmation

Simple form

I must stale
you must stale
he must stale
we must stale
you must stale
they must stale

V-ing form

I must be staling
you must be staling
he must be staling
we must be staling
you must be staling
they must be staling

Perfect

I must have staled
you must have staled
he must have staled
we must have staled
you must have staled
they must have staled

V-ing perfect

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

Negation

Simple form

I must not stale
you must not stale
he must not stale
we must not stale
you must not stale
they must not stale

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I stale?
must you stale?
must he stale?
must we stale?
must you stale?
must they stale?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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