English verb conjugation
MUST CORDUROY

Regular verb: corduroy - corduroyed - corduroyed

Affirmation

Simple form	V-ing form
I must corduroy you must corduroy she must corduroy we must corduroy you must corduroy they must corduroy	I must be corduroying you must be corduroying she 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 she 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 she 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 she 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 she 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 she 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 she 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 she corduroy? must we corduroy? must you corduroy? must they corduroy?	must I be corduroying? must you be corduroying? must she 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 she 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 she 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 she 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 she 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 she 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 she have been corduroying? mustn't we have been corduroying? mustn't you have been corduroying? mustn't they have been corduroying?