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