must strangle
Regular verb: strangle - strangled- strangled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must strangle
you must strangle
he must strangle
we must strangle
you must strangle
they must strangle 	I must be strangling
you must be strangling
he must be strangling
we must be strangling
you must be strangling
they must be strangling	I must have strangled
you must have strangled
he must have strangled
we must have strangled
you must have strangled
they must have strangled	I must have been strangling
you must have been strangling
he must have been strangling
we must have been strangling
you must have been strangling
they must have been strangling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not strangle
you must not strangle
he must not strangle
we must not strangle
you must not strangle
they must not strangle 	I must not be strangling
you must not be strangling
he must not be strangling
we must not be strangling
you must not be strangling
they must not be strangling	I must not have strangled
you must not have strangled
he must not have strangled
we must not have strangled
you must not have strangled
they must not have strangled	I must not have been strangling
you must not have been strangling
he must not have been strangling
we must not have been strangling
you must not have been strangling
they must not have been strangling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I strangle?
must you strangle?
must he strangle?
must we strangle?
must you strangle?
must they strangle? 	must I be strangling?
must you be strangling?
must he be strangling?
must we be strangling?
must you be strangling?
must they be strangling? 	must I have strangled?
must you have strangled?
must he have strangled?
must we have strangled?
must you have strangled?
must they have strangled? 	must I have been strangling?
must you have been strangling?
must he have been strangling?
must we have been strangling?
must you have been strangling?
must they have been strangling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not strangle?
must you not strangle?
must he not strangle?
must we not strangle?
must you not strangle?
must they not strangle? 	must I not be strangling?
must you not be strangling?
must he not be strangling?
must we not be strangling?
must you not be strangling?
must they not be strangling? 	must I not have strangled?
must you not have strangled?
must he not have strangled?
must we not have strangled?
must you not have strangled?
must they not have strangled? 	must I not have been strangling?
must you not have been strangling?
must he not have been strangling?
must we not have been strangling?
must you not have been strangling?
must they not have been strangling?