must porpoise
Regular verb: porpoise - porpoised- porpoised

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must porpoise
you must porpoise
he must porpoise
we must porpoise
you must porpoise
they must porpoise 	I must be porpoising
you must be porpoising
he must be porpoising
we must be porpoising
you must be porpoising
they must be porpoising	I must have porpoised
you must have porpoised
he must have porpoised
we must have porpoised
you must have porpoised
they must have porpoised	I must have been porpoising
you must have been porpoising
he must have been porpoising
we must have been porpoising
you must have been porpoising
they must have been porpoising	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not porpoise
you must not porpoise
he must not porpoise
we must not porpoise
you must not porpoise
they must not porpoise 	I must not be porpoising
you must not be porpoising
he must not be porpoising
we must not be porpoising
you must not be porpoising
they must not be porpoising	I must not have porpoised
you must not have porpoised
he must not have porpoised
we must not have porpoised
you must not have porpoised
they must not have porpoised	I must not have been porpoising
you must not have been porpoising
he must not have been porpoising
we must not have been porpoising
you must not have been porpoising
they must not have been porpoising	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I porpoise?
must you porpoise?
must he porpoise?
must we porpoise?
must you porpoise?
must they porpoise? 	must I be porpoising?
must you be porpoising?
must he be porpoising?
must we be porpoising?
must you be porpoising?
must they be porpoising? 	must I have porpoised?
must you have porpoised?
must he have porpoised?
must we have porpoised?
must you have porpoised?
must they have porpoised? 	must I have been porpoising?
must you have been porpoising?
must he have been porpoising?
must we have been porpoising?
must you have been porpoising?
must they have been porpoising? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not porpoise?
must you not porpoise?
must he not porpoise?
must we not porpoise?
must you not porpoise?
must they not porpoise? 	must I not be porpoising?
must you not be porpoising?
must he not be porpoising?
must we not be porpoising?
must you not be porpoising?
must they not be porpoising? 	must I not have porpoised?
must you not have porpoised?
must he not have porpoised?
must we not have porpoised?
must you not have porpoised?
must they not have porpoised? 	must I not have been porpoising?
must you not have been porpoising?
must he not have been porpoising?
must we not have been porpoising?
must you not have been porpoising?
must they not have been porpoising?