must protrude
Regular verb: protrude - protruded- protruded

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must protrude
you must protrude
he must protrude
we must protrude
you must protrude
they must protrude 	I must be protruding
you must be protruding
he must be protruding
we must be protruding
you must be protruding
they must be protruding	I must have protruded
you must have protruded
he must have protruded
we must have protruded
you must have protruded
they must have protruded	I must have been protruding
you must have been protruding
he must have been protruding
we must have been protruding
you must have been protruding
they must have been protruding	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't protrude
you mustn't protrude
he mustn't protrude
we mustn't protrude
you mustn't protrude
they mustn't protrude 	I mustn't be protruding
you mustn't be protruding
he mustn't be protruding
we mustn't be protruding
you mustn't be protruding
they mustn't be protruding	I mustn't have protruded
you mustn't have protruded
he mustn't have protruded
we mustn't have protruded
you mustn't have protruded
they mustn't have protruded	I mustn't have been protruding
you mustn't have been protruding
he mustn't have been protruding
we mustn't have been protruding
you mustn't have been protruding
they mustn't have been protruding	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I protrude?
must you protrude?
must he protrude?
must we protrude?
must you protrude?
must they protrude? 	must I be protruding?
must you be protruding?
must he be protruding?
must we be protruding?
must you be protruding?
must they be protruding? 	must I have protruded?
must you have protruded?
must he have protruded?
must we have protruded?
must you have protruded?
must they have protruded? 	must I have been protruding?
must you have been protruding?
must he have been protruding?
must we have been protruding?
must you have been protruding?
must they have been protruding? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I protrude?
mustn't you protrude?
mustn't he protrude?
mustn't we protrude?
mustn't you protrude?
mustn't they protrude? 	mustn't I be protruding?
mustn't you be protruding?
mustn't he be protruding?
mustn't we be protruding?
mustn't you be protruding?
mustn't they be protruding? 	mustn't I have protruded?
mustn't you have protruded?
mustn't he have protruded?
mustn't we have protruded?
mustn't you have protruded?
mustn't they have protruded? 	mustn't I have been protruding?
mustn't you have been protruding?
mustn't he have been protruding?
mustn't we have been protruding?
mustn't you have been protruding?
mustn't they have been protruding?