must slaver
Regular verb: slaver - slavered- slavered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must slaver
you must slaver
she must slaver
we must slaver
you must slaver
they must slaver 	I must be slavering
you must be slavering
she must be slavering
we must be slavering
you must be slavering
they must be slavering	I must have slavered
you must have slavered
she must have slavered
we must have slavered
you must have slavered
they must have slavered	I must have been slavering
you must have been slavering
she must have been slavering
we must have been slavering
you must have been slavering
they must have been slavering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't slaver
you mustn't slaver
she mustn't slaver
we mustn't slaver
you mustn't slaver
they mustn't slaver 	I mustn't be slavering
you mustn't be slavering
she mustn't be slavering
we mustn't be slavering
you mustn't be slavering
they mustn't be slavering	I mustn't have slavered
you mustn't have slavered
she mustn't have slavered
we mustn't have slavered
you mustn't have slavered
they mustn't have slavered	I mustn't have been slavering
you mustn't have been slavering
she mustn't have been slavering
we mustn't have been slavering
you mustn't have been slavering
they mustn't have been slavering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I slaver?
must you slaver?
must she slaver?
must we slaver?
must you slaver?
must they slaver? 	must I be slavering?
must you be slavering?
must she be slavering?
must we be slavering?
must you be slavering?
must they be slavering? 	must I have slavered?
must you have slavered?
must she have slavered?
must we have slavered?
must you have slavered?
must they have slavered? 	must I have been slavering?
must you have been slavering?
must she have been slavering?
must we have been slavering?
must you have been slavering?
must they have been slavering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I slaver?
mustn't you slaver?
mustn't she slaver?
mustn't we slaver?
mustn't you slaver?
mustn't they slaver? 	mustn't I be slavering?
mustn't you be slavering?
mustn't she be slavering?
mustn't we be slavering?
mustn't you be slavering?
mustn't they be slavering? 	mustn't I have slavered?
mustn't you have slavered?
mustn't she have slavered?
mustn't we have slavered?
mustn't you have slavered?
mustn't they have slavered? 	mustn't I have been slavering?
mustn't you have been slavering?
mustn't she have been slavering?
mustn't we have been slavering?
mustn't you have been slavering?
mustn't they have been slavering?