must regurgitate
Regular verb: regurgitate - regurgitated- regurgitated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must regurgitate
you must regurgitate
she must regurgitate
we must regurgitate
you must regurgitate
they must regurgitate 	I must be regurgitating
you must be regurgitating
she must be regurgitating
we must be regurgitating
you must be regurgitating
they must be regurgitating	I must have regurgitated
you must have regurgitated
she must have regurgitated
we must have regurgitated
you must have regurgitated
they must have regurgitated	I must have been regurgitating
you must have been regurgitating
she must have been regurgitating
we must have been regurgitating
you must have been regurgitating
they must have been regurgitating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't regurgitate
you mustn't regurgitate
she mustn't regurgitate
we mustn't regurgitate
you mustn't regurgitate
they mustn't regurgitate 	I mustn't be regurgitating
you mustn't be regurgitating
she mustn't be regurgitating
we mustn't be regurgitating
you mustn't be regurgitating
they mustn't be regurgitating	I mustn't have regurgitated
you mustn't have regurgitated
she mustn't have regurgitated
we mustn't have regurgitated
you mustn't have regurgitated
they mustn't have regurgitated	I mustn't have been regurgitating
you mustn't have been regurgitating
she mustn't have been regurgitating
we mustn't have been regurgitating
you mustn't have been regurgitating
they mustn't have been regurgitating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I regurgitate?
must you regurgitate?
must she regurgitate?
must we regurgitate?
must you regurgitate?
must they regurgitate? 	must I be regurgitating?
must you be regurgitating?
must she be regurgitating?
must we be regurgitating?
must you be regurgitating?
must they be regurgitating? 	must I have regurgitated?
must you have regurgitated?
must she have regurgitated?
must we have regurgitated?
must you have regurgitated?
must they have regurgitated? 	must I have been regurgitating?
must you have been regurgitating?
must she have been regurgitating?
must we have been regurgitating?
must you have been regurgitating?
must they have been regurgitating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I regurgitate?
mustn't you regurgitate?
mustn't she regurgitate?
mustn't we regurgitate?
mustn't you regurgitate?
mustn't they regurgitate? 	mustn't I be regurgitating?
mustn't you be regurgitating?
mustn't she be regurgitating?
mustn't we be regurgitating?
mustn't you be regurgitating?
mustn't they be regurgitating? 	mustn't I have regurgitated?
mustn't you have regurgitated?
mustn't she have regurgitated?
mustn't we have regurgitated?
mustn't you have regurgitated?
mustn't they have regurgitated? 	mustn't I have been regurgitating?
mustn't you have been regurgitating?
mustn't she have been regurgitating?
mustn't we have been regurgitating?
mustn't you have been regurgitating?
mustn't they have been regurgitating?