I must rig you must rig he must rig we must rig you must rig they must rig
V-ing form
I must be rigging you must be rigging he must be rigging we must be rigging you must be rigging they must be rigging
Perfect
I must have rigged you must have rigged he must have rigged we must have rigged you must have rigged they must have rigged
V-ing perfect
I must have been rigging you must have been rigging he must have been rigging we must have been rigging you must have been rigging they must have been rigging
Negation
Simple form
I mustn't rig you mustn't rig he mustn't rig we mustn't rig you mustn't rig they mustn't rig
V-ing form
I mustn't be rigging you mustn't be rigging he mustn't be rigging we mustn't be rigging you mustn't be rigging they mustn't be rigging
Perfect
I mustn't have rigged you mustn't have rigged he mustn't have rigged we mustn't have rigged you mustn't have rigged they mustn't have rigged
V-ing perfect
I mustn't have been rigging you mustn't have been rigging he mustn't have been rigging we mustn't have been rigging you mustn't have been rigging they mustn't have been rigging
Interrogative form
Simple form
must I rig? must you rig? must he rig? must we rig? must you rig? must they rig?
V-ing form
must I be rigging? must you be rigging? must he be rigging? must we be rigging? must you be rigging? must they be rigging?
Perfect
must I have rigged? must you have rigged? must he have rigged? must we have rigged? must you have rigged? must they have rigged?
V-ing perfect
must I have been rigging? must you have been rigging? must he have been rigging? must we have been rigging? must you have been rigging? must they have been rigging?
Interro-negative form
Simple form
mustn't I rig? mustn't you rig? mustn't he rig? mustn't we rig? mustn't you rig? mustn't they rig?
V-ing form
mustn't I be rigging? mustn't you be rigging? mustn't he be rigging? mustn't we be rigging? mustn't you be rigging? mustn't they be rigging?
Perfect
mustn't I have rigged? mustn't you have rigged? mustn't he have rigged? mustn't we have rigged? mustn't you have rigged? mustn't they have rigged?
V-ing perfect
mustn't I have been rigging? mustn't you have been rigging? mustn't he have been rigging? mustn't we have been rigging? mustn't you have been rigging? mustn't they have been rigging?