English verb conjugation
MUST NATTER

Regular verb: natter - nattered - nattered

Affirmation

Simple form	V-ing form
I must natter you must natter she must natter we must natter you must natter they must natter	I must be nattering you must be nattering she must be nattering we must be nattering you must be nattering they must be nattering
Perfect	V-ing perfect
I must have nattered you must have nattered she must have nattered we must have nattered you must have nattered they must have nattered	I must have been nattering you must have been nattering she must have been nattering we must have been nattering you must have been nattering they must have been nattering

Negation

Simple form	V-ing form
I must not natter you must not natter she must not natter we must not natter you must not natter they must not natter	I must not be nattering you must not be nattering she must not be nattering we must not be nattering you must not be nattering they must not be nattering
Perfect	V-ing perfect
I must not have nattered you must not have nattered she must not have nattered we must not have nattered you must not have nattered they must not have nattered	I must not have been nattering you must not have been nattering she must not have been nattering we must not have been nattering you must not have been nattering they must not have been nattering

Interrogative form

Simple form	V-ing form
must I natter? must you natter? must she natter? must we natter? must you natter? must they natter?	must I be nattering? must you be nattering? must she be nattering? must we be nattering? must you be nattering? must they be nattering?
Perfect	V-ing perfect
must I have nattered? must you have nattered? must she have nattered? must we have nattered? must you have nattered? must they have nattered?	must I have been nattering? must you have been nattering? must she have been nattering? must we have been nattering? must you have been nattering? must they have been nattering?

Interro-negative form

Simple form	V-ing form
must I not natter? must you not natter? must she not natter? must we not natter? must you not natter? must they not natter?	must I not be nattering? must you not be nattering? must she not be nattering? must we not be nattering? must you not be nattering? must they not be nattering?
Perfect	V-ing perfect
must I not have nattered? must you not have nattered? must she not have nattered? must we not have nattered? must you not have nattered? must they not have nattered?	must I not have been nattering? must you not have been nattering? must she not have been nattering? must we not have been nattering? must you not have been nattering? must they not have been nattering?