must rock
Regular verb: rock - rocked- rocked

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must rock
you must rock
she must rock
we must rock
you must rock
they must rock 	I must be rocking
you must be rocking
she must be rocking
we must be rocking
you must be rocking
they must be rocking	I must have rocked
you must have rocked
she must have rocked
we must have rocked
you must have rocked
they must have rocked	I must have been rocking
you must have been rocking
she must have been rocking
we must have been rocking
you must have been rocking
they must have been rocking	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't rock
you mustn't rock
she mustn't rock
we mustn't rock
you mustn't rock
they mustn't rock 	I mustn't be rocking
you mustn't be rocking
she mustn't be rocking
we mustn't be rocking
you mustn't be rocking
they mustn't be rocking	I mustn't have rocked
you mustn't have rocked
she mustn't have rocked
we mustn't have rocked
you mustn't have rocked
they mustn't have rocked	I mustn't have been rocking
you mustn't have been rocking
she mustn't have been rocking
we mustn't have been rocking
you mustn't have been rocking
they mustn't have been rocking	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I rock?
must you rock?
must she rock?
must we rock?
must you rock?
must they rock? 	must I be rocking?
must you be rocking?
must she be rocking?
must we be rocking?
must you be rocking?
must they be rocking? 	must I have rocked?
must you have rocked?
must she have rocked?
must we have rocked?
must you have rocked?
must they have rocked? 	must I have been rocking?
must you have been rocking?
must she have been rocking?
must we have been rocking?
must you have been rocking?
must they have been rocking? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I rock?
mustn't you rock?
mustn't she rock?
mustn't we rock?
mustn't you rock?
mustn't they rock? 	mustn't I be rocking?
mustn't you be rocking?
mustn't she be rocking?
mustn't we be rocking?
mustn't you be rocking?
mustn't they be rocking? 	mustn't I have rocked?
mustn't you have rocked?
mustn't she have rocked?
mustn't we have rocked?
mustn't you have rocked?
mustn't they have rocked? 	mustn't I have been rocking?
mustn't you have been rocking?
mustn't she have been rocking?
mustn't we have been rocking?
mustn't you have been rocking?
mustn't they have been rocking?