English verb conjugation
MUST TAP

Regular verb: tap - tapped - tapped

Affirmation

Simple form	V-ing form
I must tap you must tap he must tap we must tap you must tap they must tap	I must be tapping you must be tapping he must be tapping we must be tapping you must be tapping they must be tapping
Perfect	V-ing perfect
I must have tapped you must have tapped he must have tapped we must have tapped you must have tapped they must have tapped	I must have been tapping you must have been tapping he must have been tapping we must have been tapping you must have been tapping they must have been tapping

Negation

Simple form	V-ing form
I mustn't tap you mustn't tap he mustn't tap we mustn't tap you mustn't tap they mustn't tap	I mustn't be tapping you mustn't be tapping he mustn't be tapping we mustn't be tapping you mustn't be tapping they mustn't be tapping
Perfect	V-ing perfect
I mustn't have tapped you mustn't have tapped he mustn't have tapped we mustn't have tapped you mustn't have tapped they mustn't have tapped	I mustn't have been tapping you mustn't have been tapping he mustn't have been tapping we mustn't have been tapping you mustn't have been tapping they mustn't have been tapping

Interrogative form

Simple form	V-ing form
must I tap? must you tap? must he tap? must we tap? must you tap? must they tap?	must I be tapping? must you be tapping? must he be tapping? must we be tapping? must you be tapping? must they be tapping?
Perfect	V-ing perfect
must I have tapped? must you have tapped? must he have tapped? must we have tapped? must you have tapped? must they have tapped?	must I have been tapping? must you have been tapping? must he have been tapping? must we have been tapping? must you have been tapping? must they have been tapping?

Interro-negative form

Simple form	V-ing form
mustn't I tap? mustn't you tap? mustn't he tap? mustn't we tap? mustn't you tap? mustn't they tap?	mustn't I be tapping? mustn't you be tapping? mustn't he be tapping? mustn't we be tapping? mustn't you be tapping? mustn't they be tapping?
Perfect	V-ing perfect
mustn't I have tapped? mustn't you have tapped? mustn't he have tapped? mustn't we have tapped? mustn't you have tapped? mustn't they have tapped?	mustn't I have been tapping? mustn't you have been tapping? mustn't he have been tapping? mustn't we have been tapping? mustn't you have been tapping? mustn't they have been tapping?