must starboard
Regular verb: starboard - starboarded- starboarded

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must starboard
you must starboard
he must starboard
we must starboard
you must starboard
they must starboard 	I must be starboarding
you must be starboarding
he must be starboarding
we must be starboarding
you must be starboarding
they must be starboarding	I must have starboarded
you must have starboarded
he must have starboarded
we must have starboarded
you must have starboarded
they must have starboarded	I must have been starboarding
you must have been starboarding
he must have been starboarding
we must have been starboarding
you must have been starboarding
they must have been starboarding	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not starboard
you must not starboard
he must not starboard
we must not starboard
you must not starboard
they must not starboard 	I must not be starboarding
you must not be starboarding
he must not be starboarding
we must not be starboarding
you must not be starboarding
they must not be starboarding	I must not have starboarded
you must not have starboarded
he must not have starboarded
we must not have starboarded
you must not have starboarded
they must not have starboarded	I must not have been starboarding
you must not have been starboarding
he must not have been starboarding
we must not have been starboarding
you must not have been starboarding
they must not have been starboarding	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I starboard?
must you starboard?
must he starboard?
must we starboard?
must you starboard?
must they starboard? 	must I be starboarding?
must you be starboarding?
must he be starboarding?
must we be starboarding?
must you be starboarding?
must they be starboarding? 	must I have starboarded?
must you have starboarded?
must he have starboarded?
must we have starboarded?
must you have starboarded?
must they have starboarded? 	must I have been starboarding?
must you have been starboarding?
must he have been starboarding?
must we have been starboarding?
must you have been starboarding?
must they have been starboarding? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not starboard?
must you not starboard?
must he not starboard?
must we not starboard?
must you not starboard?
must they not starboard? 	must I not be starboarding?
must you not be starboarding?
must he not be starboarding?
must we not be starboarding?
must you not be starboarding?
must they not be starboarding? 	must I not have starboarded?
must you not have starboarded?
must he not have starboarded?
must we not have starboarded?
must you not have starboarded?
must they not have starboarded? 	must I not have been starboarding?
must you not have been starboarding?
must he not have been starboarding?
must we not have been starboarding?
must you not have been starboarding?
must they not have been starboarding?