must simplify
Regular verb: simplify - simplified- simplified

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must simplify
you must simplify
she must simplify
we must simplify
you must simplify
they must simplify 	I must be simplifying
you must be simplifying
she must be simplifying
we must be simplifying
you must be simplifying
they must be simplifying	I must have simplified
you must have simplified
she must have simplified
we must have simplified
you must have simplified
they must have simplified	I must have been simplifying
you must have been simplifying
she must have been simplifying
we must have been simplifying
you must have been simplifying
they must have been simplifying	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't simplify
you mustn't simplify
she mustn't simplify
we mustn't simplify
you mustn't simplify
they mustn't simplify 	I mustn't be simplifying
you mustn't be simplifying
she mustn't be simplifying
we mustn't be simplifying
you mustn't be simplifying
they mustn't be simplifying	I mustn't have simplified
you mustn't have simplified
she mustn't have simplified
we mustn't have simplified
you mustn't have simplified
they mustn't have simplified	I mustn't have been simplifying
you mustn't have been simplifying
she mustn't have been simplifying
we mustn't have been simplifying
you mustn't have been simplifying
they mustn't have been simplifying	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I simplify?
must you simplify?
must she simplify?
must we simplify?
must you simplify?
must they simplify? 	must I be simplifying?
must you be simplifying?
must she be simplifying?
must we be simplifying?
must you be simplifying?
must they be simplifying? 	must I have simplified?
must you have simplified?
must she have simplified?
must we have simplified?
must you have simplified?
must they have simplified? 	must I have been simplifying?
must you have been simplifying?
must she have been simplifying?
must we have been simplifying?
must you have been simplifying?
must they have been simplifying? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I simplify?
mustn't you simplify?
mustn't she simplify?
mustn't we simplify?
mustn't you simplify?
mustn't they simplify? 	mustn't I be simplifying?
mustn't you be simplifying?
mustn't she be simplifying?
mustn't we be simplifying?
mustn't you be simplifying?
mustn't they be simplifying? 	mustn't I have simplified?
mustn't you have simplified?
mustn't she have simplified?
mustn't we have simplified?
mustn't you have simplified?
mustn't they have simplified? 	mustn't I have been simplifying?
mustn't you have been simplifying?
mustn't she have been simplifying?
mustn't we have been simplifying?
mustn't you have been simplifying?
mustn't they have been simplifying?