must pup
Regular verb: pup - pupped- pupped

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must pup
you must pup
he must pup
we must pup
you must pup
they must pup 	I must be pupping
you must be pupping
he must be pupping
we must be pupping
you must be pupping
they must be pupping	I must have pupped
you must have pupped
he must have pupped
we must have pupped
you must have pupped
they must have pupped	I must have been pupping
you must have been pupping
he must have been pupping
we must have been pupping
you must have been pupping
they must have been pupping	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't pup
you mustn't pup
he mustn't pup
we mustn't pup
you mustn't pup
they mustn't pup 	I mustn't be pupping
you mustn't be pupping
he mustn't be pupping
we mustn't be pupping
you mustn't be pupping
they mustn't be pupping	I mustn't have pupped
you mustn't have pupped
he mustn't have pupped
we mustn't have pupped
you mustn't have pupped
they mustn't have pupped	I mustn't have been pupping
you mustn't have been pupping
he mustn't have been pupping
we mustn't have been pupping
you mustn't have been pupping
they mustn't have been pupping	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I pup?
must you pup?
must he pup?
must we pup?
must you pup?
must they pup? 	must I be pupping?
must you be pupping?
must he be pupping?
must we be pupping?
must you be pupping?
must they be pupping? 	must I have pupped?
must you have pupped?
must he have pupped?
must we have pupped?
must you have pupped?
must they have pupped? 	must I have been pupping?
must you have been pupping?
must he have been pupping?
must we have been pupping?
must you have been pupping?
must they have been pupping? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I pup?
mustn't you pup?
mustn't he pup?
mustn't we pup?
mustn't you pup?
mustn't they pup? 	mustn't I be pupping?
mustn't you be pupping?
mustn't he be pupping?
mustn't we be pupping?
mustn't you be pupping?
mustn't they be pupping? 	mustn't I have pupped?
mustn't you have pupped?
mustn't he have pupped?
mustn't we have pupped?
mustn't you have pupped?
mustn't they have pupped? 	mustn't I have been pupping?
mustn't you have been pupping?
mustn't he have been pupping?
mustn't we have been pupping?
mustn't you have been pupping?
mustn't they have been pupping?