English verb conjugation
MUST CORRUGATE

Regular verb: corrugate - corrugated - corrugated

Affirmation

Simple form	V-ing form
I must corrugate you must corrugate he must corrugate we must corrugate you must corrugate they must corrugate	I must be corrugating you must be corrugating he must be corrugating we must be corrugating you must be corrugating they must be corrugating
Perfect	V-ing perfect
I must have corrugated you must have corrugated he must have corrugated we must have corrugated you must have corrugated they must have corrugated	I must have been corrugating you must have been corrugating he must have been corrugating we must have been corrugating you must have been corrugating they must have been corrugating

Negation

Simple form	V-ing form
I mustn't corrugate you mustn't corrugate he mustn't corrugate we mustn't corrugate you mustn't corrugate they mustn't corrugate	I mustn't be corrugating you mustn't be corrugating he mustn't be corrugating we mustn't be corrugating you mustn't be corrugating they mustn't be corrugating
Perfect	V-ing perfect
I mustn't have corrugated you mustn't have corrugated he mustn't have corrugated we mustn't have corrugated you mustn't have corrugated they mustn't have corrugated	I mustn't have been corrugating you mustn't have been corrugating he mustn't have been corrugating we mustn't have been corrugating you mustn't have been corrugating they mustn't have been corrugating

Interrogative form

Simple form	V-ing form
must I corrugate? must you corrugate? must he corrugate? must we corrugate? must you corrugate? must they corrugate?	must I be corrugating? must you be corrugating? must he be corrugating? must we be corrugating? must you be corrugating? must they be corrugating?
Perfect	V-ing perfect
must I have corrugated? must you have corrugated? must he have corrugated? must we have corrugated? must you have corrugated? must they have corrugated?	must I have been corrugating? must you have been corrugating? must he have been corrugating? must we have been corrugating? must you have been corrugating? must they have been corrugating?

Interro-negative form

Simple form	V-ing form
mustn't I corrugate? mustn't you corrugate? mustn't he corrugate? mustn't we corrugate? mustn't you corrugate? mustn't they corrugate?	mustn't I be corrugating? mustn't you be corrugating? mustn't he be corrugating? mustn't we be corrugating? mustn't you be corrugating? mustn't they be corrugating?
Perfect	V-ing perfect
mustn't I have corrugated? mustn't you have corrugated? mustn't he have corrugated? mustn't we have corrugated? mustn't you have corrugated? mustn't they have corrugated?	mustn't I have been corrugating? mustn't you have been corrugating? mustn't he have been corrugating? mustn't we have been corrugating? mustn't you have been corrugating? mustn't they have been corrugating?