must abate
Regular verb: abate - abated- abated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must abate
you must abate
she must abate
we must abate
you must abate
they must abate 	I must be abating
you must be abating
she must be abating
we must be abating
you must be abating
they must be abating	I must have abated
you must have abated
she must have abated
we must have abated
you must have abated
they must have abated	I must have been abating
you must have been abating
she must have been abating
we must have been abating
you must have been abating
they must have been abating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't abate
you mustn't abate
she mustn't abate
we mustn't abate
you mustn't abate
they mustn't abate 	I mustn't be abating
you mustn't be abating
she mustn't be abating
we mustn't be abating
you mustn't be abating
they mustn't be abating	I mustn't have abated
you mustn't have abated
she mustn't have abated
we mustn't have abated
you mustn't have abated
they mustn't have abated	I mustn't have been abating
you mustn't have been abating
she mustn't have been abating
we mustn't have been abating
you mustn't have been abating
they mustn't have been abating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I abate?
must you abate?
must she abate?
must we abate?
must you abate?
must they abate? 	must I be abating?
must you be abating?
must she be abating?
must we be abating?
must you be abating?
must they be abating? 	must I have abated?
must you have abated?
must she have abated?
must we have abated?
must you have abated?
must they have abated? 	must I have been abating?
must you have been abating?
must she have been abating?
must we have been abating?
must you have been abating?
must they have been abating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I abate?
mustn't you abate?
mustn't she abate?
mustn't we abate?
mustn't you abate?
mustn't they abate? 	mustn't I be abating?
mustn't you be abating?
mustn't she be abating?
mustn't we be abating?
mustn't you be abating?
mustn't they be abating? 	mustn't I have abated?
mustn't you have abated?
mustn't she have abated?
mustn't we have abated?
mustn't you have abated?
mustn't they have abated? 	mustn't I have been abating?
mustn't you have been abating?
mustn't she have been abating?
mustn't we have been abating?
mustn't you have been abating?
mustn't they have been abating?