English verb conjugation
MUST NATTER

Regular verb: natter - nattered - nattered

Affirmation

Simple form	V-ing form
I must natter you must natter he must natter we must natter you must natter they must natter	I must be nattering you must be nattering he 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 he 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 he 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 mustn't natter you mustn't natter he mustn't natter we mustn't natter you mustn't natter they mustn't natter	I mustn't be nattering you mustn't be nattering he mustn't be nattering we mustn't be nattering you mustn't be nattering they mustn't be nattering
Perfect	V-ing perfect
I mustn't have nattered you mustn't have nattered he mustn't have nattered we mustn't have nattered you mustn't have nattered they mustn't have nattered	I mustn't have been nattering you mustn't have been nattering he mustn't have been nattering we mustn't have been nattering you mustn't have been nattering they mustn't have been nattering

Interrogative form

Simple form	V-ing form
must I natter? must you natter? must he natter? must we natter? must you natter? must they natter?	must I be nattering? must you be nattering? must he 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 he 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 he 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
mustn't I natter? mustn't you natter? mustn't he natter? mustn't we natter? mustn't you natter? mustn't they natter?	mustn't I be nattering? mustn't you be nattering? mustn't he be nattering? mustn't we be nattering? mustn't you be nattering? mustn't they be nattering?
Perfect	V-ing perfect
mustn't I have nattered? mustn't you have nattered? mustn't he have nattered? mustn't we have nattered? mustn't you have nattered? mustn't they have nattered?	mustn't I have been nattering? mustn't you have been nattering? mustn't he have been nattering? mustn't we have been nattering? mustn't you have been nattering? mustn't they have been nattering?