must caper
Regular verb: caper - capered- capered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must caper
you must caper
he must caper
we must caper
you must caper
they must caper 	I must be capering
you must be capering
he must be capering
we must be capering
you must be capering
they must be capering	I must have capered
you must have capered
he must have capered
we must have capered
you must have capered
they must have capered	I must have been capering
you must have been capering
he must have been capering
we must have been capering
you must have been capering
they must have been capering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't caper
you mustn't caper
he mustn't caper
we mustn't caper
you mustn't caper
they mustn't caper 	I mustn't be capering
you mustn't be capering
he mustn't be capering
we mustn't be capering
you mustn't be capering
they mustn't be capering	I mustn't have capered
you mustn't have capered
he mustn't have capered
we mustn't have capered
you mustn't have capered
they mustn't have capered	I mustn't have been capering
you mustn't have been capering
he mustn't have been capering
we mustn't have been capering
you mustn't have been capering
they mustn't have been capering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I caper?
must you caper?
must he caper?
must we caper?
must you caper?
must they caper? 	must I be capering?
must you be capering?
must he be capering?
must we be capering?
must you be capering?
must they be capering? 	must I have capered?
must you have capered?
must he have capered?
must we have capered?
must you have capered?
must they have capered? 	must I have been capering?
must you have been capering?
must he have been capering?
must we have been capering?
must you have been capering?
must they have been capering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I caper?
mustn't you caper?
mustn't he caper?
mustn't we caper?
mustn't you caper?
mustn't they caper? 	mustn't I be capering?
mustn't you be capering?
mustn't he be capering?
mustn't we be capering?
mustn't you be capering?
mustn't they be capering? 	mustn't I have capered?
mustn't you have capered?
mustn't he have capered?
mustn't we have capered?
mustn't you have capered?
mustn't they have capered? 	mustn't I have been capering?
mustn't you have been capering?
mustn't he have been capering?
mustn't we have been capering?
mustn't you have been capering?
mustn't they have been capering?