must groove
Regular verb: groove - grooved- grooved

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must groove
you must groove
he must groove
we must groove
you must groove
they must groove 	I must be grooving
you must be grooving
he must be grooving
we must be grooving
you must be grooving
they must be grooving	I must have grooved
you must have grooved
he must have grooved
we must have grooved
you must have grooved
they must have grooved	I must have been grooving
you must have been grooving
he must have been grooving
we must have been grooving
you must have been grooving
they must have been grooving	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't groove
you mustn't groove
he mustn't groove
we mustn't groove
you mustn't groove
they mustn't groove 	I mustn't be grooving
you mustn't be grooving
he mustn't be grooving
we mustn't be grooving
you mustn't be grooving
they mustn't be grooving	I mustn't have grooved
you mustn't have grooved
he mustn't have grooved
we mustn't have grooved
you mustn't have grooved
they mustn't have grooved	I mustn't have been grooving
you mustn't have been grooving
he mustn't have been grooving
we mustn't have been grooving
you mustn't have been grooving
they mustn't have been grooving	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I groove?
must you groove?
must he groove?
must we groove?
must you groove?
must they groove? 	must I be grooving?
must you be grooving?
must he be grooving?
must we be grooving?
must you be grooving?
must they be grooving? 	must I have grooved?
must you have grooved?
must he have grooved?
must we have grooved?
must you have grooved?
must they have grooved? 	must I have been grooving?
must you have been grooving?
must he have been grooving?
must we have been grooving?
must you have been grooving?
must they have been grooving? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I groove?
mustn't you groove?
mustn't he groove?
mustn't we groove?
mustn't you groove?
mustn't they groove? 	mustn't I be grooving?
mustn't you be grooving?
mustn't he be grooving?
mustn't we be grooving?
mustn't you be grooving?
mustn't they be grooving? 	mustn't I have grooved?
mustn't you have grooved?
mustn't he have grooved?
mustn't we have grooved?
mustn't you have grooved?
mustn't they have grooved? 	mustn't I have been grooving?
mustn't you have been grooving?
mustn't he have been grooving?
mustn't we have been grooving?
mustn't you have been grooving?
mustn't they have been grooving?