must roc
Regular verb: roc - roced- roced

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must roc
you must roc
she must roc
we must roc
you must roc
they must roc 	I must be rocing
you must be rocing
she must be rocing
we must be rocing
you must be rocing
they must be rocing	I must have roced
you must have roced
she must have roced
we must have roced
you must have roced
they must have roced	I must have been rocing
you must have been rocing
she must have been rocing
we must have been rocing
you must have been rocing
they must have been rocing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't roc
you mustn't roc
she mustn't roc
we mustn't roc
you mustn't roc
they mustn't roc 	I mustn't be rocing
you mustn't be rocing
she mustn't be rocing
we mustn't be rocing
you mustn't be rocing
they mustn't be rocing	I mustn't have roced
you mustn't have roced
she mustn't have roced
we mustn't have roced
you mustn't have roced
they mustn't have roced	I mustn't have been rocing
you mustn't have been rocing
she mustn't have been rocing
we mustn't have been rocing
you mustn't have been rocing
they mustn't have been rocing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I roc?
must you roc?
must she roc?
must we roc?
must you roc?
must they roc? 	must I be rocing?
must you be rocing?
must she be rocing?
must we be rocing?
must you be rocing?
must they be rocing? 	must I have roced?
must you have roced?
must she have roced?
must we have roced?
must you have roced?
must they have roced? 	must I have been rocing?
must you have been rocing?
must she have been rocing?
must we have been rocing?
must you have been rocing?
must they have been rocing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I roc?
mustn't you roc?
mustn't she roc?
mustn't we roc?
mustn't you roc?
mustn't they roc? 	mustn't I be rocing?
mustn't you be rocing?
mustn't she be rocing?
mustn't we be rocing?
mustn't you be rocing?
mustn't they be rocing? 	mustn't I have roced?
mustn't you have roced?
mustn't she have roced?
mustn't we have roced?
mustn't you have roced?
mustn't they have roced? 	mustn't I have been rocing?
mustn't you have been rocing?
mustn't she have been rocing?
mustn't we have been rocing?
mustn't you have been rocing?
mustn't they have been rocing?