English verb conjugation
MUST WINTERKILL

Regular verb: winterkill - winterkilled - winterkilled

Affirmation

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