must nap
Regular verb: nap - napped- napped

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must nap
you must nap
she must nap
we must nap
you must nap
they must nap 	I must be napping
you must be napping
she must be napping
we must be napping
you must be napping
they must be napping	I must have napped
you must have napped
she must have napped
we must have napped
you must have napped
they must have napped	I must have been napping
you must have been napping
she must have been napping
we must have been napping
you must have been napping
they must have been napping	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't nap
you mustn't nap
she mustn't nap
we mustn't nap
you mustn't nap
they mustn't nap 	I mustn't be napping
you mustn't be napping
she mustn't be napping
we mustn't be napping
you mustn't be napping
they mustn't be napping	I mustn't have napped
you mustn't have napped
she mustn't have napped
we mustn't have napped
you mustn't have napped
they mustn't have napped	I mustn't have been napping
you mustn't have been napping
she mustn't have been napping
we mustn't have been napping
you mustn't have been napping
they mustn't have been napping	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I nap?
must you nap?
must she nap?
must we nap?
must you nap?
must they nap? 	must I be napping?
must you be napping?
must she be napping?
must we be napping?
must you be napping?
must they be napping? 	must I have napped?
must you have napped?
must she have napped?
must we have napped?
must you have napped?
must they have napped? 	must I have been napping?
must you have been napping?
must she have been napping?
must we have been napping?
must you have been napping?
must they have been napping? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I nap?
mustn't you nap?
mustn't she nap?
mustn't we nap?
mustn't you nap?
mustn't they nap? 	mustn't I be napping?
mustn't you be napping?
mustn't she be napping?
mustn't we be napping?
mustn't you be napping?
mustn't they be napping? 	mustn't I have napped?
mustn't you have napped?
mustn't she have napped?
mustn't we have napped?
mustn't you have napped?
mustn't they have napped? 	mustn't I have been napping?
mustn't you have been napping?
mustn't she have been napping?
mustn't we have been napping?
mustn't you have been napping?
mustn't they have been napping?