must exacerbate
Regular verb: exacerbate - exacerbated- exacerbated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must exacerbate
you must exacerbate
she must exacerbate
we must exacerbate
you must exacerbate
they must exacerbate 	I must be exacerbating
you must be exacerbating
she must be exacerbating
we must be exacerbating
you must be exacerbating
they must be exacerbating	I must have exacerbated
you must have exacerbated
she must have exacerbated
we must have exacerbated
you must have exacerbated
they must have exacerbated	I must have been exacerbating
you must have been exacerbating
she must have been exacerbating
we must have been exacerbating
you must have been exacerbating
they must have been exacerbating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't exacerbate
you mustn't exacerbate
she mustn't exacerbate
we mustn't exacerbate
you mustn't exacerbate
they mustn't exacerbate 	I mustn't be exacerbating
you mustn't be exacerbating
she mustn't be exacerbating
we mustn't be exacerbating
you mustn't be exacerbating
they mustn't be exacerbating	I mustn't have exacerbated
you mustn't have exacerbated
she mustn't have exacerbated
we mustn't have exacerbated
you mustn't have exacerbated
they mustn't have exacerbated	I mustn't have been exacerbating
you mustn't have been exacerbating
she mustn't have been exacerbating
we mustn't have been exacerbating
you mustn't have been exacerbating
they mustn't have been exacerbating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I exacerbate?
must you exacerbate?
must she exacerbate?
must we exacerbate?
must you exacerbate?
must they exacerbate? 	must I be exacerbating?
must you be exacerbating?
must she be exacerbating?
must we be exacerbating?
must you be exacerbating?
must they be exacerbating? 	must I have exacerbated?
must you have exacerbated?
must she have exacerbated?
must we have exacerbated?
must you have exacerbated?
must they have exacerbated? 	must I have been exacerbating?
must you have been exacerbating?
must she have been exacerbating?
must we have been exacerbating?
must you have been exacerbating?
must they have been exacerbating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I exacerbate?
mustn't you exacerbate?
mustn't she exacerbate?
mustn't we exacerbate?
mustn't you exacerbate?
mustn't they exacerbate? 	mustn't I be exacerbating?
mustn't you be exacerbating?
mustn't she be exacerbating?
mustn't we be exacerbating?
mustn't you be exacerbating?
mustn't they be exacerbating? 	mustn't I have exacerbated?
mustn't you have exacerbated?
mustn't she have exacerbated?
mustn't we have exacerbated?
mustn't you have exacerbated?
mustn't they have exacerbated? 	mustn't I have been exacerbating?
mustn't you have been exacerbating?
mustn't she have been exacerbating?
mustn't we have been exacerbating?
mustn't you have been exacerbating?
mustn't they have been exacerbating?