must derogate
Regular verb: derogate - derogated- derogated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must derogate
you must derogate
she must derogate
we must derogate
you must derogate
they must derogate 	I must be derogating
you must be derogating
she must be derogating
we must be derogating
you must be derogating
they must be derogating	I must have derogated
you must have derogated
she must have derogated
we must have derogated
you must have derogated
they must have derogated	I must have been derogating
you must have been derogating
she must have been derogating
we must have been derogating
you must have been derogating
they must have been derogating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't derogate
you mustn't derogate
she mustn't derogate
we mustn't derogate
you mustn't derogate
they mustn't derogate 	I mustn't be derogating
you mustn't be derogating
she mustn't be derogating
we mustn't be derogating
you mustn't be derogating
they mustn't be derogating	I mustn't have derogated
you mustn't have derogated
she mustn't have derogated
we mustn't have derogated
you mustn't have derogated
they mustn't have derogated	I mustn't have been derogating
you mustn't have been derogating
she mustn't have been derogating
we mustn't have been derogating
you mustn't have been derogating
they mustn't have been derogating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I derogate?
must you derogate?
must she derogate?
must we derogate?
must you derogate?
must they derogate? 	must I be derogating?
must you be derogating?
must she be derogating?
must we be derogating?
must you be derogating?
must they be derogating? 	must I have derogated?
must you have derogated?
must she have derogated?
must we have derogated?
must you have derogated?
must they have derogated? 	must I have been derogating?
must you have been derogating?
must she have been derogating?
must we have been derogating?
must you have been derogating?
must they have been derogating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I derogate?
mustn't you derogate?
mustn't she derogate?
mustn't we derogate?
mustn't you derogate?
mustn't they derogate? 	mustn't I be derogating?
mustn't you be derogating?
mustn't she be derogating?
mustn't we be derogating?
mustn't you be derogating?
mustn't they be derogating? 	mustn't I have derogated?
mustn't you have derogated?
mustn't she have derogated?
mustn't we have derogated?
mustn't you have derogated?
mustn't they have derogated? 	mustn't I have been derogating?
mustn't you have been derogating?
mustn't she have been derogating?
mustn't we have been derogating?
mustn't you have been derogating?
mustn't they have been derogating?