must rut
Regular verb: rut - rutted- rutted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must rut
you must rut
he must rut
we must rut
you must rut
they must rut 	I must be rutting
you must be rutting
he must be rutting
we must be rutting
you must be rutting
they must be rutting	I must have rutted
you must have rutted
he must have rutted
we must have rutted
you must have rutted
they must have rutted	I must have been rutting
you must have been rutting
he must have been rutting
we must have been rutting
you must have been rutting
they must have been rutting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not rut
you must not rut
he must not rut
we must not rut
you must not rut
they must not rut 	I must not be rutting
you must not be rutting
he must not be rutting
we must not be rutting
you must not be rutting
they must not be rutting	I must not have rutted
you must not have rutted
he must not have rutted
we must not have rutted
you must not have rutted
they must not have rutted	I must not have been rutting
you must not have been rutting
he must not have been rutting
we must not have been rutting
you must not have been rutting
they must not have been rutting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I rut?
must you rut?
must he rut?
must we rut?
must you rut?
must they rut? 	must I be rutting?
must you be rutting?
must he be rutting?
must we be rutting?
must you be rutting?
must they be rutting? 	must I have rutted?
must you have rutted?
must he have rutted?
must we have rutted?
must you have rutted?
must they have rutted? 	must I have been rutting?
must you have been rutting?
must he have been rutting?
must we have been rutting?
must you have been rutting?
must they have been rutting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not rut?
must you not rut?
must he not rut?
must we not rut?
must you not rut?
must they not rut? 	must I not be rutting?
must you not be rutting?
must he not be rutting?
must we not be rutting?
must you not be rutting?
must they not be rutting? 	must I not have rutted?
must you not have rutted?
must he not have rutted?
must we not have rutted?
must you not have rutted?
must they not have rutted? 	must I not have been rutting?
must you not have been rutting?
must he not have been rutting?
must we not have been rutting?
must you not have been rutting?
must they not have been rutting?