must sleuth
Regular verb: sleuth - sleuthed- sleuthed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must sleuth
you must sleuth
she must sleuth
we must sleuth
you must sleuth
they must sleuth 	I must be sleuthing
you must be sleuthing
she must be sleuthing
we must be sleuthing
you must be sleuthing
they must be sleuthing	I must have sleuthed
you must have sleuthed
she must have sleuthed
we must have sleuthed
you must have sleuthed
they must have sleuthed	I must have been sleuthing
you must have been sleuthing
she must have been sleuthing
we must have been sleuthing
you must have been sleuthing
they must have been sleuthing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't sleuth
you mustn't sleuth
she mustn't sleuth
we mustn't sleuth
you mustn't sleuth
they mustn't sleuth 	I mustn't be sleuthing
you mustn't be sleuthing
she mustn't be sleuthing
we mustn't be sleuthing
you mustn't be sleuthing
they mustn't be sleuthing	I mustn't have sleuthed
you mustn't have sleuthed
she mustn't have sleuthed
we mustn't have sleuthed
you mustn't have sleuthed
they mustn't have sleuthed	I mustn't have been sleuthing
you mustn't have been sleuthing
she mustn't have been sleuthing
we mustn't have been sleuthing
you mustn't have been sleuthing
they mustn't have been sleuthing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I sleuth?
must you sleuth?
must she sleuth?
must we sleuth?
must you sleuth?
must they sleuth? 	must I be sleuthing?
must you be sleuthing?
must she be sleuthing?
must we be sleuthing?
must you be sleuthing?
must they be sleuthing? 	must I have sleuthed?
must you have sleuthed?
must she have sleuthed?
must we have sleuthed?
must you have sleuthed?
must they have sleuthed? 	must I have been sleuthing?
must you have been sleuthing?
must she have been sleuthing?
must we have been sleuthing?
must you have been sleuthing?
must they have been sleuthing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I sleuth?
mustn't you sleuth?
mustn't she sleuth?
mustn't we sleuth?
mustn't you sleuth?
mustn't they sleuth? 	mustn't I be sleuthing?
mustn't you be sleuthing?
mustn't she be sleuthing?
mustn't we be sleuthing?
mustn't you be sleuthing?
mustn't they be sleuthing? 	mustn't I have sleuthed?
mustn't you have sleuthed?
mustn't she have sleuthed?
mustn't we have sleuthed?
mustn't you have sleuthed?
mustn't they have sleuthed? 	mustn't I have been sleuthing?
mustn't you have been sleuthing?
mustn't she have been sleuthing?
mustn't we have been sleuthing?
mustn't you have been sleuthing?
mustn't they have been sleuthing?