must ravage
Regular verb: ravage - ravaged- ravaged

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must ravage
you must ravage
he must ravage
we must ravage
you must ravage
they must ravage 	I must be ravaging
you must be ravaging
he must be ravaging
we must be ravaging
you must be ravaging
they must be ravaging	I must have ravaged
you must have ravaged
he must have ravaged
we must have ravaged
you must have ravaged
they must have ravaged	I must have been ravaging
you must have been ravaging
he must have been ravaging
we must have been ravaging
you must have been ravaging
they must have been ravaging	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't ravage
you mustn't ravage
he mustn't ravage
we mustn't ravage
you mustn't ravage
they mustn't ravage 	I mustn't be ravaging
you mustn't be ravaging
he mustn't be ravaging
we mustn't be ravaging
you mustn't be ravaging
they mustn't be ravaging	I mustn't have ravaged
you mustn't have ravaged
he mustn't have ravaged
we mustn't have ravaged
you mustn't have ravaged
they mustn't have ravaged	I mustn't have been ravaging
you mustn't have been ravaging
he mustn't have been ravaging
we mustn't have been ravaging
you mustn't have been ravaging
they mustn't have been ravaging	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I ravage?
must you ravage?
must he ravage?
must we ravage?
must you ravage?
must they ravage? 	must I be ravaging?
must you be ravaging?
must he be ravaging?
must we be ravaging?
must you be ravaging?
must they be ravaging? 	must I have ravaged?
must you have ravaged?
must he have ravaged?
must we have ravaged?
must you have ravaged?
must they have ravaged? 	must I have been ravaging?
must you have been ravaging?
must he have been ravaging?
must we have been ravaging?
must you have been ravaging?
must they have been ravaging? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I ravage?
mustn't you ravage?
mustn't he ravage?
mustn't we ravage?
mustn't you ravage?
mustn't they ravage? 	mustn't I be ravaging?
mustn't you be ravaging?
mustn't he be ravaging?
mustn't we be ravaging?
mustn't you be ravaging?
mustn't they be ravaging? 	mustn't I have ravaged?
mustn't you have ravaged?
mustn't he have ravaged?
mustn't we have ravaged?
mustn't you have ravaged?
mustn't they have ravaged? 	mustn't I have been ravaging?
mustn't you have been ravaging?
mustn't he have been ravaging?
mustn't we have been ravaging?
mustn't you have been ravaging?
mustn't they have been ravaging?