English verb conjugation
MUST EXACERBATE

Regular verb: exacerbate - exacerbated - exacerbated

Affirmation

Simple form	V-ing form
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
Perfect	V-ing perfect
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
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
Perfect	V-ing perfect
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
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?
Perfect	V-ing perfect
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
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?
Perfect	V-ing perfect
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?