must lollop
Regular verb: lollop - lolloped- lolloped

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must lollop
you must lollop
he must lollop
we must lollop
you must lollop
they must lollop 	I must be lolloping
you must be lolloping
he must be lolloping
we must be lolloping
you must be lolloping
they must be lolloping	I must have lolloped
you must have lolloped
he must have lolloped
we must have lolloped
you must have lolloped
they must have lolloped	I must have been lolloping
you must have been lolloping
he must have been lolloping
we must have been lolloping
you must have been lolloping
they must have been lolloping	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't lollop
you mustn't lollop
he mustn't lollop
we mustn't lollop
you mustn't lollop
they mustn't lollop 	I mustn't be lolloping
you mustn't be lolloping
he mustn't be lolloping
we mustn't be lolloping
you mustn't be lolloping
they mustn't be lolloping	I mustn't have lolloped
you mustn't have lolloped
he mustn't have lolloped
we mustn't have lolloped
you mustn't have lolloped
they mustn't have lolloped	I mustn't have been lolloping
you mustn't have been lolloping
he mustn't have been lolloping
we mustn't have been lolloping
you mustn't have been lolloping
they mustn't have been lolloping	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I lollop?
must you lollop?
must he lollop?
must we lollop?
must you lollop?
must they lollop? 	must I be lolloping?
must you be lolloping?
must he be lolloping?
must we be lolloping?
must you be lolloping?
must they be lolloping? 	must I have lolloped?
must you have lolloped?
must he have lolloped?
must we have lolloped?
must you have lolloped?
must they have lolloped? 	must I have been lolloping?
must you have been lolloping?
must he have been lolloping?
must we have been lolloping?
must you have been lolloping?
must they have been lolloping? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I lollop?
mustn't you lollop?
mustn't he lollop?
mustn't we lollop?
mustn't you lollop?
mustn't they lollop? 	mustn't I be lolloping?
mustn't you be lolloping?
mustn't he be lolloping?
mustn't we be lolloping?
mustn't you be lolloping?
mustn't they be lolloping? 	mustn't I have lolloped?
mustn't you have lolloped?
mustn't he have lolloped?
mustn't we have lolloped?
mustn't you have lolloped?
mustn't they have lolloped? 	mustn't I have been lolloping?
mustn't you have been lolloping?
mustn't he have been lolloping?
mustn't we have been lolloping?
mustn't you have been lolloping?
mustn't they have been lolloping?