English verb conjugation
MUST CORDUROY

Regular verb: corduroy - corduroyed - corduroyed

Affirmation

Simple form	V-ing form
I must corduroy you must corduroy he must corduroy we must corduroy you must corduroy they must corduroy	I must be corduroying you must be corduroying he must be corduroying we must be corduroying you must be corduroying they must be corduroying
Perfect	V-ing perfect
I must have corduroyed you must have corduroyed he must have corduroyed we must have corduroyed you must have corduroyed they must have corduroyed	I must have been corduroying you must have been corduroying he must have been corduroying we must have been corduroying you must have been corduroying they must have been corduroying

Negation

Simple form	V-ing form
I mustn't corduroy you mustn't corduroy he mustn't corduroy we mustn't corduroy you mustn't corduroy they mustn't corduroy	I mustn't be corduroying you mustn't be corduroying he mustn't be corduroying we mustn't be corduroying you mustn't be corduroying they mustn't be corduroying
Perfect	V-ing perfect
I mustn't have corduroyed you mustn't have corduroyed he mustn't have corduroyed we mustn't have corduroyed you mustn't have corduroyed they mustn't have corduroyed	I mustn't have been corduroying you mustn't have been corduroying he mustn't have been corduroying we mustn't have been corduroying you mustn't have been corduroying they mustn't have been corduroying

Interrogative form

Simple form	V-ing form
must I corduroy? must you corduroy? must he corduroy? must we corduroy? must you corduroy? must they corduroy?	must I be corduroying? must you be corduroying? must he be corduroying? must we be corduroying? must you be corduroying? must they be corduroying?
Perfect	V-ing perfect
must I have corduroyed? must you have corduroyed? must he have corduroyed? must we have corduroyed? must you have corduroyed? must they have corduroyed?	must I have been corduroying? must you have been corduroying? must he have been corduroying? must we have been corduroying? must you have been corduroying? must they have been corduroying?

Interro-negative form

Simple form	V-ing form
mustn't I corduroy? mustn't you corduroy? mustn't he corduroy? mustn't we corduroy? mustn't you corduroy? mustn't they corduroy?	mustn't I be corduroying? mustn't you be corduroying? mustn't he be corduroying? mustn't we be corduroying? mustn't you be corduroying? mustn't they be corduroying?
Perfect	V-ing perfect
mustn't I have corduroyed? mustn't you have corduroyed? mustn't he have corduroyed? mustn't we have corduroyed? mustn't you have corduroyed? mustn't they have corduroyed?	mustn't I have been corduroying? mustn't you have been corduroying? mustn't he have been corduroying? mustn't we have been corduroying? mustn't you have been corduroying? mustn't they have been corduroying?