must devour
Regular verb: devour - devoured- devoured

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must devour
you must devour
she must devour
we must devour
you must devour
they must devour 	I must be devouring
you must be devouring
she must be devouring
we must be devouring
you must be devouring
they must be devouring	I must have devoured
you must have devoured
she must have devoured
we must have devoured
you must have devoured
they must have devoured	I must have been devouring
you must have been devouring
she must have been devouring
we must have been devouring
you must have been devouring
they must have been devouring	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't devour
you mustn't devour
she mustn't devour
we mustn't devour
you mustn't devour
they mustn't devour 	I mustn't be devouring
you mustn't be devouring
she mustn't be devouring
we mustn't be devouring
you mustn't be devouring
they mustn't be devouring	I mustn't have devoured
you mustn't have devoured
she mustn't have devoured
we mustn't have devoured
you mustn't have devoured
they mustn't have devoured	I mustn't have been devouring
you mustn't have been devouring
she mustn't have been devouring
we mustn't have been devouring
you mustn't have been devouring
they mustn't have been devouring	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I devour?
must you devour?
must she devour?
must we devour?
must you devour?
must they devour? 	must I be devouring?
must you be devouring?
must she be devouring?
must we be devouring?
must you be devouring?
must they be devouring? 	must I have devoured?
must you have devoured?
must she have devoured?
must we have devoured?
must you have devoured?
must they have devoured? 	must I have been devouring?
must you have been devouring?
must she have been devouring?
must we have been devouring?
must you have been devouring?
must they have been devouring? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I devour?
mustn't you devour?
mustn't she devour?
mustn't we devour?
mustn't you devour?
mustn't they devour? 	mustn't I be devouring?
mustn't you be devouring?
mustn't she be devouring?
mustn't we be devouring?
mustn't you be devouring?
mustn't they be devouring? 	mustn't I have devoured?
mustn't you have devoured?
mustn't she have devoured?
mustn't we have devoured?
mustn't you have devoured?
mustn't they have devoured? 	mustn't I have been devouring?
mustn't you have been devouring?
mustn't she have been devouring?
mustn't we have been devouring?
mustn't you have been devouring?
mustn't they have been devouring?