must assess
Regular verb: assess - assessed- assessed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must assess
you must assess
she must assess
we must assess
you must assess
they must assess 	I must be assessing
you must be assessing
she must be assessing
we must be assessing
you must be assessing
they must be assessing	I must have assessed
you must have assessed
she must have assessed
we must have assessed
you must have assessed
they must have assessed	I must have been assessing
you must have been assessing
she must have been assessing
we must have been assessing
you must have been assessing
they must have been assessing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't assess
you mustn't assess
she mustn't assess
we mustn't assess
you mustn't assess
they mustn't assess 	I mustn't be assessing
you mustn't be assessing
she mustn't be assessing
we mustn't be assessing
you mustn't be assessing
they mustn't be assessing	I mustn't have assessed
you mustn't have assessed
she mustn't have assessed
we mustn't have assessed
you mustn't have assessed
they mustn't have assessed	I mustn't have been assessing
you mustn't have been assessing
she mustn't have been assessing
we mustn't have been assessing
you mustn't have been assessing
they mustn't have been assessing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I assess?
must you assess?
must she assess?
must we assess?
must you assess?
must they assess? 	must I be assessing?
must you be assessing?
must she be assessing?
must we be assessing?
must you be assessing?
must they be assessing? 	must I have assessed?
must you have assessed?
must she have assessed?
must we have assessed?
must you have assessed?
must they have assessed? 	must I have been assessing?
must you have been assessing?
must she have been assessing?
must we have been assessing?
must you have been assessing?
must they have been assessing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I assess?
mustn't you assess?
mustn't she assess?
mustn't we assess?
mustn't you assess?
mustn't they assess? 	mustn't I be assessing?
mustn't you be assessing?
mustn't she be assessing?
mustn't we be assessing?
mustn't you be assessing?
mustn't they be assessing? 	mustn't I have assessed?
mustn't you have assessed?
mustn't she have assessed?
mustn't we have assessed?
mustn't you have assessed?
mustn't they have assessed? 	mustn't I have been assessing?
mustn't you have been assessing?
mustn't she have been assessing?
mustn't we have been assessing?
mustn't you have been assessing?
mustn't they have been assessing?