English verb conjugation
MUST PUTREFY

Regular verb: putrefy - putrefied - putrefied

Affirmation

Simple form	V-ing form
I must putrefy you must putrefy he must putrefy we must putrefy you must putrefy they must putrefy	I must be putrefying you must be putrefying he must be putrefying we must be putrefying you must be putrefying they must be putrefying
Perfect	V-ing perfect
I must have putrefied you must have putrefied he must have putrefied we must have putrefied you must have putrefied they must have putrefied	I must have been putrefying you must have been putrefying he must have been putrefying we must have been putrefying you must have been putrefying they must have been putrefying

Negation

Simple form	V-ing form
I mustn't putrefy you mustn't putrefy he mustn't putrefy we mustn't putrefy you mustn't putrefy they mustn't putrefy	I mustn't be putrefying you mustn't be putrefying he mustn't be putrefying we mustn't be putrefying you mustn't be putrefying they mustn't be putrefying
Perfect	V-ing perfect
I mustn't have putrefied you mustn't have putrefied he mustn't have putrefied we mustn't have putrefied you mustn't have putrefied they mustn't have putrefied	I mustn't have been putrefying you mustn't have been putrefying he mustn't have been putrefying we mustn't have been putrefying you mustn't have been putrefying they mustn't have been putrefying

Interrogative form

Simple form	V-ing form
must I putrefy? must you putrefy? must he putrefy? must we putrefy? must you putrefy? must they putrefy?	must I be putrefying? must you be putrefying? must he be putrefying? must we be putrefying? must you be putrefying? must they be putrefying?
Perfect	V-ing perfect
must I have putrefied? must you have putrefied? must he have putrefied? must we have putrefied? must you have putrefied? must they have putrefied?	must I have been putrefying? must you have been putrefying? must he have been putrefying? must we have been putrefying? must you have been putrefying? must they have been putrefying?

Interro-negative form

Simple form	V-ing form
mustn't I putrefy? mustn't you putrefy? mustn't he putrefy? mustn't we putrefy? mustn't you putrefy? mustn't they putrefy?	mustn't I be putrefying? mustn't you be putrefying? mustn't he be putrefying? mustn't we be putrefying? mustn't you be putrefying? mustn't they be putrefying?
Perfect	V-ing perfect
mustn't I have putrefied? mustn't you have putrefied? mustn't he have putrefied? mustn't we have putrefied? mustn't you have putrefied? mustn't they have putrefied?	mustn't I have been putrefying? mustn't you have been putrefying? mustn't he have been putrefying? mustn't we have been putrefying? mustn't you have been putrefying? mustn't they have been putrefying?