English verb conjugation
MUST WINTERKILL

Regular verb: winterkill - winterkilled - winterkilled

Affirmation

Simple form	V-ing form
I must winterkill you must winterkill he must winterkill we must winterkill you must winterkill they must winterkill	I must be winterkilling you must be winterkilling he must be winterkilling we must be winterkilling you must be winterkilling they must be winterkilling
Perfect	V-ing perfect
I must have winterkilled you must have winterkilled he must have winterkilled we must have winterkilled you must have winterkilled they must have winterkilled	I must have been winterkilling you must have been winterkilling he must have been winterkilling we must have been winterkilling you must have been winterkilling they must have been winterkilling

Negation

Simple form	V-ing form
I mustn't winterkill you mustn't winterkill he mustn't winterkill we mustn't winterkill you mustn't winterkill they mustn't winterkill	I mustn't be winterkilling you mustn't be winterkilling he mustn't be winterkilling we mustn't be winterkilling you mustn't be winterkilling they mustn't be winterkilling
Perfect	V-ing perfect
I mustn't have winterkilled you mustn't have winterkilled he mustn't have winterkilled we mustn't have winterkilled you mustn't have winterkilled they mustn't have winterkilled	I mustn't have been winterkilling you mustn't have been winterkilling he mustn't have been winterkilling we mustn't have been winterkilling you mustn't have been winterkilling they mustn't have been winterkilling

Interrogative form

Simple form	V-ing form
must I winterkill? must you winterkill? must he winterkill? must we winterkill? must you winterkill? must they winterkill?	must I be winterkilling? must you be winterkilling? must he be winterkilling? must we be winterkilling? must you be winterkilling? must they be winterkilling?
Perfect	V-ing perfect
must I have winterkilled? must you have winterkilled? must he have winterkilled? must we have winterkilled? must you have winterkilled? must they have winterkilled?	must I have been winterkilling? must you have been winterkilling? must he have been winterkilling? must we have been winterkilling? must you have been winterkilling? must they have been winterkilling?

Interro-negative form

Simple form	V-ing form
mustn't I winterkill? mustn't you winterkill? mustn't he winterkill? mustn't we winterkill? mustn't you winterkill? mustn't they winterkill?	mustn't I be winterkilling? mustn't you be winterkilling? mustn't he be winterkilling? mustn't we be winterkilling? mustn't you be winterkilling? mustn't they be winterkilling?
Perfect	V-ing perfect
mustn't I have winterkilled? mustn't you have winterkilled? mustn't he have winterkilled? mustn't we have winterkilled? mustn't you have winterkilled? mustn't they have winterkilled?	mustn't I have been winterkilling? mustn't you have been winterkilling? mustn't he have been winterkilling? mustn't we have been winterkilling? mustn't you have been winterkilling? mustn't they have been winterkilling?