must cruise
Regular verb: cruise - cruised- cruised

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must cruise
you must cruise
he must cruise
we must cruise
you must cruise
they must cruise 	I must be cruising
you must be cruising
he must be cruising
we must be cruising
you must be cruising
they must be cruising	I must have cruised
you must have cruised
he must have cruised
we must have cruised
you must have cruised
they must have cruised	I must have been cruising
you must have been cruising
he must have been cruising
we must have been cruising
you must have been cruising
they must have been cruising	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't cruise
you mustn't cruise
he mustn't cruise
we mustn't cruise
you mustn't cruise
they mustn't cruise 	I mustn't be cruising
you mustn't be cruising
he mustn't be cruising
we mustn't be cruising
you mustn't be cruising
they mustn't be cruising	I mustn't have cruised
you mustn't have cruised
he mustn't have cruised
we mustn't have cruised
you mustn't have cruised
they mustn't have cruised	I mustn't have been cruising
you mustn't have been cruising
he mustn't have been cruising
we mustn't have been cruising
you mustn't have been cruising
they mustn't have been cruising	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I cruise?
must you cruise?
must he cruise?
must we cruise?
must you cruise?
must they cruise? 	must I be cruising?
must you be cruising?
must he be cruising?
must we be cruising?
must you be cruising?
must they be cruising? 	must I have cruised?
must you have cruised?
must he have cruised?
must we have cruised?
must you have cruised?
must they have cruised? 	must I have been cruising?
must you have been cruising?
must he have been cruising?
must we have been cruising?
must you have been cruising?
must they have been cruising? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I cruise?
mustn't you cruise?
mustn't he cruise?
mustn't we cruise?
mustn't you cruise?
mustn't they cruise? 	mustn't I be cruising?
mustn't you be cruising?
mustn't he be cruising?
mustn't we be cruising?
mustn't you be cruising?
mustn't they be cruising? 	mustn't I have cruised?
mustn't you have cruised?
mustn't he have cruised?
mustn't we have cruised?
mustn't you have cruised?
mustn't they have cruised? 	mustn't I have been cruising?
mustn't you have been cruising?
mustn't he have been cruising?
mustn't we have been cruising?
mustn't you have been cruising?
mustn't they have been cruising?