must roughhouse
Regular verb: roughhouse - roughhoused- roughhoused

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must roughhouse
you must roughhouse
she must roughhouse
we must roughhouse
you must roughhouse
they must roughhouse 	I must be roughhousing
you must be roughhousing
she must be roughhousing
we must be roughhousing
you must be roughhousing
they must be roughhousing	I must have roughhoused
you must have roughhoused
she must have roughhoused
we must have roughhoused
you must have roughhoused
they must have roughhoused	I must have been roughhousing
you must have been roughhousing
she must have been roughhousing
we must have been roughhousing
you must have been roughhousing
they must have been roughhousing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't roughhouse
you mustn't roughhouse
she mustn't roughhouse
we mustn't roughhouse
you mustn't roughhouse
they mustn't roughhouse 	I mustn't be roughhousing
you mustn't be roughhousing
she mustn't be roughhousing
we mustn't be roughhousing
you mustn't be roughhousing
they mustn't be roughhousing	I mustn't have roughhoused
you mustn't have roughhoused
she mustn't have roughhoused
we mustn't have roughhoused
you mustn't have roughhoused
they mustn't have roughhoused	I mustn't have been roughhousing
you mustn't have been roughhousing
she mustn't have been roughhousing
we mustn't have been roughhousing
you mustn't have been roughhousing
they mustn't have been roughhousing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I roughhouse?
must you roughhouse?
must she roughhouse?
must we roughhouse?
must you roughhouse?
must they roughhouse? 	must I be roughhousing?
must you be roughhousing?
must she be roughhousing?
must we be roughhousing?
must you be roughhousing?
must they be roughhousing? 	must I have roughhoused?
must you have roughhoused?
must she have roughhoused?
must we have roughhoused?
must you have roughhoused?
must they have roughhoused? 	must I have been roughhousing?
must you have been roughhousing?
must she have been roughhousing?
must we have been roughhousing?
must you have been roughhousing?
must they have been roughhousing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I roughhouse?
mustn't you roughhouse?
mustn't she roughhouse?
mustn't we roughhouse?
mustn't you roughhouse?
mustn't they roughhouse? 	mustn't I be roughhousing?
mustn't you be roughhousing?
mustn't she be roughhousing?
mustn't we be roughhousing?
mustn't you be roughhousing?
mustn't they be roughhousing? 	mustn't I have roughhoused?
mustn't you have roughhoused?
mustn't she have roughhoused?
mustn't we have roughhoused?
mustn't you have roughhoused?
mustn't they have roughhoused? 	mustn't I have been roughhousing?
mustn't you have been roughhousing?
mustn't she have been roughhousing?
mustn't we have been roughhousing?
mustn't you have been roughhousing?
mustn't they have been roughhousing?