must habit
Regular verb: habit - habited- habited

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must habit
you must habit
he must habit
we must habit
you must habit
they must habit 	I must be habiting
you must be habiting
he must be habiting
we must be habiting
you must be habiting
they must be habiting	I must have habited
you must have habited
he must have habited
we must have habited
you must have habited
they must have habited	I must have been habiting
you must have been habiting
he must have been habiting
we must have been habiting
you must have been habiting
they must have been habiting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't habit
you mustn't habit
he mustn't habit
we mustn't habit
you mustn't habit
they mustn't habit 	I mustn't be habiting
you mustn't be habiting
he mustn't be habiting
we mustn't be habiting
you mustn't be habiting
they mustn't be habiting	I mustn't have habited
you mustn't have habited
he mustn't have habited
we mustn't have habited
you mustn't have habited
they mustn't have habited	I mustn't have been habiting
you mustn't have been habiting
he mustn't have been habiting
we mustn't have been habiting
you mustn't have been habiting
they mustn't have been habiting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I habit?
must you habit?
must he habit?
must we habit?
must you habit?
must they habit? 	must I be habiting?
must you be habiting?
must he be habiting?
must we be habiting?
must you be habiting?
must they be habiting? 	must I have habited?
must you have habited?
must he have habited?
must we have habited?
must you have habited?
must they have habited? 	must I have been habiting?
must you have been habiting?
must he have been habiting?
must we have been habiting?
must you have been habiting?
must they have been habiting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I habit?
mustn't you habit?
mustn't he habit?
mustn't we habit?
mustn't you habit?
mustn't they habit? 	mustn't I be habiting?
mustn't you be habiting?
mustn't he be habiting?
mustn't we be habiting?
mustn't you be habiting?
mustn't they be habiting? 	mustn't I have habited?
mustn't you have habited?
mustn't he have habited?
mustn't we have habited?
mustn't you have habited?
mustn't they have habited? 	mustn't I have been habiting?
mustn't you have been habiting?
mustn't he have been habiting?
mustn't we have been habiting?
mustn't you have been habiting?
mustn't they have been habiting?