English verb conjugation
MUST PITTERPATTER

Regular verb: pitterpatter - pitterpattered - pitterpattered

Affirmation

Simple form	V-ing form
I must pitterpatter you must pitterpatter he must pitterpatter we must pitterpatter you must pitterpatter they must pitterpatter	I must be pitterpattering you must be pitterpattering he must be pitterpattering we must be pitterpattering you must be pitterpattering they must be pitterpattering
Perfect	V-ing perfect
I must have pitterpattered you must have pitterpattered he must have pitterpattered we must have pitterpattered you must have pitterpattered they must have pitterpattered	I must have been pitterpattering you must have been pitterpattering he must have been pitterpattering we must have been pitterpattering you must have been pitterpattering they must have been pitterpattering

Negation

Simple form	V-ing form
I mustn't pitterpatter you mustn't pitterpatter he mustn't pitterpatter we mustn't pitterpatter you mustn't pitterpatter they mustn't pitterpatter	I mustn't be pitterpattering you mustn't be pitterpattering he mustn't be pitterpattering we mustn't be pitterpattering you mustn't be pitterpattering they mustn't be pitterpattering
Perfect	V-ing perfect
I mustn't have pitterpattered you mustn't have pitterpattered he mustn't have pitterpattered we mustn't have pitterpattered you mustn't have pitterpattered they mustn't have pitterpattered	I mustn't have been pitterpattering you mustn't have been pitterpattering he mustn't have been pitterpattering we mustn't have been pitterpattering you mustn't have been pitterpattering they mustn't have been pitterpattering

Interrogative form

Simple form	V-ing form
must I pitterpatter? must you pitterpatter? must he pitterpatter? must we pitterpatter? must you pitterpatter? must they pitterpatter?	must I be pitterpattering? must you be pitterpattering? must he be pitterpattering? must we be pitterpattering? must you be pitterpattering? must they be pitterpattering?
Perfect	V-ing perfect
must I have pitterpattered? must you have pitterpattered? must he have pitterpattered? must we have pitterpattered? must you have pitterpattered? must they have pitterpattered?	must I have been pitterpattering? must you have been pitterpattering? must he have been pitterpattering? must we have been pitterpattering? must you have been pitterpattering? must they have been pitterpattering?

Interro-negative form

Simple form	V-ing form
mustn't I pitterpatter? mustn't you pitterpatter? mustn't he pitterpatter? mustn't we pitterpatter? mustn't you pitterpatter? mustn't they pitterpatter?	mustn't I be pitterpattering? mustn't you be pitterpattering? mustn't he be pitterpattering? mustn't we be pitterpattering? mustn't you be pitterpattering? mustn't they be pitterpattering?
Perfect	V-ing perfect
mustn't I have pitterpattered? mustn't you have pitterpattered? mustn't he have pitterpattered? mustn't we have pitterpattered? mustn't you have pitterpattered? mustn't they have pitterpattered?	mustn't I have been pitterpattering? mustn't you have been pitterpattering? mustn't he have been pitterpattering? mustn't we have been pitterpattering? mustn't you have been pitterpattering? mustn't they have been pitterpattering?