English verb conjugation
MUST LAVE

Regular verb: lave - laved - laved

Affirmation

Simple form	V-ing form
I must lave you must lave she must lave we must lave you must lave they must lave	I must be laving you must be laving she must be laving we must be laving you must be laving they must be laving
Perfect	V-ing perfect
I must have laved you must have laved she must have laved we must have laved you must have laved they must have laved	I must have been laving you must have been laving she must have been laving we must have been laving you must have been laving they must have been laving

Negation

Simple form	V-ing form
I mustn't lave you mustn't lave she mustn't lave we mustn't lave you mustn't lave they mustn't lave	I mustn't be laving you mustn't be laving she mustn't be laving we mustn't be laving you mustn't be laving they mustn't be laving
Perfect	V-ing perfect
I mustn't have laved you mustn't have laved she mustn't have laved we mustn't have laved you mustn't have laved they mustn't have laved	I mustn't have been laving you mustn't have been laving she mustn't have been laving we mustn't have been laving you mustn't have been laving they mustn't have been laving

Interrogative form

Simple form	V-ing form
must I lave? must you lave? must she lave? must we lave? must you lave? must they lave?	must I be laving? must you be laving? must she be laving? must we be laving? must you be laving? must they be laving?
Perfect	V-ing perfect
must I have laved? must you have laved? must she have laved? must we have laved? must you have laved? must they have laved?	must I have been laving? must you have been laving? must she have been laving? must we have been laving? must you have been laving? must they have been laving?

Interro-negative form

Simple form	V-ing form
mustn't I lave? mustn't you lave? mustn't she lave? mustn't we lave? mustn't you lave? mustn't they lave?	mustn't I be laving? mustn't you be laving? mustn't she be laving? mustn't we be laving? mustn't you be laving? mustn't they be laving?
Perfect	V-ing perfect
mustn't I have laved? mustn't you have laved? mustn't she have laved? mustn't we have laved? mustn't you have laved? mustn't they have laved?	mustn't I have been laving? mustn't you have been laving? mustn't she have been laving? mustn't we have been laving? mustn't you have been laving? mustn't they have been laving?