must lather
Regular verb: lather - lathered- lathered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must lather
you must lather
he must lather
we must lather
you must lather
they must lather 	I must be lathering
you must be lathering
he must be lathering
we must be lathering
you must be lathering
they must be lathering	I must have lathered
you must have lathered
he must have lathered
we must have lathered
you must have lathered
they must have lathered	I must have been lathering
you must have been lathering
he must have been lathering
we must have been lathering
you must have been lathering
they must have been lathering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't lather
you mustn't lather
he mustn't lather
we mustn't lather
you mustn't lather
they mustn't lather 	I mustn't be lathering
you mustn't be lathering
he mustn't be lathering
we mustn't be lathering
you mustn't be lathering
they mustn't be lathering	I mustn't have lathered
you mustn't have lathered
he mustn't have lathered
we mustn't have lathered
you mustn't have lathered
they mustn't have lathered	I mustn't have been lathering
you mustn't have been lathering
he mustn't have been lathering
we mustn't have been lathering
you mustn't have been lathering
they mustn't have been lathering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I lather?
must you lather?
must he lather?
must we lather?
must you lather?
must they lather? 	must I be lathering?
must you be lathering?
must he be lathering?
must we be lathering?
must you be lathering?
must they be lathering? 	must I have lathered?
must you have lathered?
must he have lathered?
must we have lathered?
must you have lathered?
must they have lathered? 	must I have been lathering?
must you have been lathering?
must he have been lathering?
must we have been lathering?
must you have been lathering?
must they have been lathering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I lather?
mustn't you lather?
mustn't he lather?
mustn't we lather?
mustn't you lather?
mustn't they lather? 	mustn't I be lathering?
mustn't you be lathering?
mustn't he be lathering?
mustn't we be lathering?
mustn't you be lathering?
mustn't they be lathering? 	mustn't I have lathered?
mustn't you have lathered?
mustn't he have lathered?
mustn't we have lathered?
mustn't you have lathered?
mustn't they have lathered? 	mustn't I have been lathering?
mustn't you have been lathering?
mustn't he have been lathering?
mustn't we have been lathering?
mustn't you have been lathering?
mustn't they have been lathering?