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 must not pitterpatter you must not pitterpatter he must not pitterpatter we must not pitterpatter you must not pitterpatter they must not pitterpatter	I must not be pitterpattering you must not be pitterpattering he must not be pitterpattering we must not be pitterpattering you must not be pitterpattering they must not be pitterpattering
Perfect	V-ing perfect
I must not have pitterpattered you must not have pitterpattered he must not have pitterpattered we must not have pitterpattered you must not have pitterpattered they must not have pitterpattered	I must not have been pitterpattering you must not have been pitterpattering he must not have been pitterpattering we must not have been pitterpattering you must not have been pitterpattering they must not 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
must I not pitterpatter? must you not pitterpatter? must he not pitterpatter? must we not pitterpatter? must you not pitterpatter? must they not pitterpatter?	must I not be pitterpattering? must you not be pitterpattering? must he not be pitterpattering? must we not be pitterpattering? must you not be pitterpattering? must they not be pitterpattering?
Perfect	V-ing perfect
must I not have pitterpattered? must you not have pitterpattered? must he not have pitterpattered? must we not have pitterpattered? must you not have pitterpattered? must they not have pitterpattered?	must I not have been pitterpattering? must you not have been pitterpattering? must he not have been pitterpattering? must we not have been pitterpattering? must you not have been pitterpattering? must they not have been pitterpattering?