must occlude
Regular verb: occlude - occluded- occluded

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must occlude
you must occlude
he must occlude
we must occlude
you must occlude
they must occlude 	I must be occluding
you must be occluding
he must be occluding
we must be occluding
you must be occluding
they must be occluding	I must have occluded
you must have occluded
he must have occluded
we must have occluded
you must have occluded
they must have occluded	I must have been occluding
you must have been occluding
he must have been occluding
we must have been occluding
you must have been occluding
they must have been occluding	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't occlude
you mustn't occlude
he mustn't occlude
we mustn't occlude
you mustn't occlude
they mustn't occlude 	I mustn't be occluding
you mustn't be occluding
he mustn't be occluding
we mustn't be occluding
you mustn't be occluding
they mustn't be occluding	I mustn't have occluded
you mustn't have occluded
he mustn't have occluded
we mustn't have occluded
you mustn't have occluded
they mustn't have occluded	I mustn't have been occluding
you mustn't have been occluding
he mustn't have been occluding
we mustn't have been occluding
you mustn't have been occluding
they mustn't have been occluding	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I occlude?
must you occlude?
must he occlude?
must we occlude?
must you occlude?
must they occlude? 	must I be occluding?
must you be occluding?
must he be occluding?
must we be occluding?
must you be occluding?
must they be occluding? 	must I have occluded?
must you have occluded?
must he have occluded?
must we have occluded?
must you have occluded?
must they have occluded? 	must I have been occluding?
must you have been occluding?
must he have been occluding?
must we have been occluding?
must you have been occluding?
must they have been occluding? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I occlude?
mustn't you occlude?
mustn't he occlude?
mustn't we occlude?
mustn't you occlude?
mustn't they occlude? 	mustn't I be occluding?
mustn't you be occluding?
mustn't he be occluding?
mustn't we be occluding?
mustn't you be occluding?
mustn't they be occluding? 	mustn't I have occluded?
mustn't you have occluded?
mustn't he have occluded?
mustn't we have occluded?
mustn't you have occluded?
mustn't they have occluded? 	mustn't I have been occluding?
mustn't you have been occluding?
mustn't he have been occluding?
mustn't we have been occluding?
mustn't you have been occluding?
mustn't they have been occluding?