English verb conjugation
MUST STAG

Regular verb: stag - staged - staged

Affirmation

Simple form	V-ing form
I must stag you must stag he must stag we must stag you must stag they must stag	I must be staging you must be staging he must be staging we must be staging you must be staging they must be staging
Perfect	V-ing perfect
I must have staged you must have staged he must have staged we must have staged you must have staged they must have staged	I must have been staging you must have been staging he must have been staging we must have been staging you must have been staging they must have been staging

Negation

Simple form	V-ing form
I mustn't stag you mustn't stag he mustn't stag we mustn't stag you mustn't stag they mustn't stag	I mustn't be staging you mustn't be staging he mustn't be staging we mustn't be staging you mustn't be staging they mustn't be staging
Perfect	V-ing perfect
I mustn't have staged you mustn't have staged he mustn't have staged we mustn't have staged you mustn't have staged they mustn't have staged	I mustn't have been staging you mustn't have been staging he mustn't have been staging we mustn't have been staging you mustn't have been staging they mustn't have been staging

Interrogative form

Simple form	V-ing form
must I stag? must you stag? must he stag? must we stag? must you stag? must they stag?	must I be staging? must you be staging? must he be staging? must we be staging? must you be staging? must they be staging?
Perfect	V-ing perfect
must I have staged? must you have staged? must he have staged? must we have staged? must you have staged? must they have staged?	must I have been staging? must you have been staging? must he have been staging? must we have been staging? must you have been staging? must they have been staging?

Interro-negative form

Simple form	V-ing form
mustn't I stag? mustn't you stag? mustn't he stag? mustn't we stag? mustn't you stag? mustn't they stag?	mustn't I be staging? mustn't you be staging? mustn't he be staging? mustn't we be staging? mustn't you be staging? mustn't they be staging?
Perfect	V-ing perfect
mustn't I have staged? mustn't you have staged? mustn't he have staged? mustn't we have staged? mustn't you have staged? mustn't they have staged?	mustn't I have been staging? mustn't you have been staging? mustn't he have been staging? mustn't we have been staging? mustn't you have been staging? mustn't they have been staging?