English verb conjugation
MUST WASH

Regular verb: wash - washed - washed

Affirmation

Simple form	V-ing form
I must wash you must wash he must wash we must wash you must wash they must wash	I must be washing you must be washing he must be washing we must be washing you must be washing they must be washing
Perfect	V-ing perfect
I must have washed you must have washed he must have washed we must have washed you must have washed they must have washed	I must have been washing you must have been washing he must have been washing we must have been washing you must have been washing they must have been washing

Negation

Simple form	V-ing form
I mustn't wash you mustn't wash he mustn't wash we mustn't wash you mustn't wash they mustn't wash	I mustn't be washing you mustn't be washing he mustn't be washing we mustn't be washing you mustn't be washing they mustn't be washing
Perfect	V-ing perfect
I mustn't have washed you mustn't have washed he mustn't have washed we mustn't have washed you mustn't have washed they mustn't have washed	I mustn't have been washing you mustn't have been washing he mustn't have been washing we mustn't have been washing you mustn't have been washing they mustn't have been washing

Interrogative form

Simple form	V-ing form
must I wash? must you wash? must he wash? must we wash? must you wash? must they wash?	must I be washing? must you be washing? must he be washing? must we be washing? must you be washing? must they be washing?
Perfect	V-ing perfect
must I have washed? must you have washed? must he have washed? must we have washed? must you have washed? must they have washed?	must I have been washing? must you have been washing? must he have been washing? must we have been washing? must you have been washing? must they have been washing?

Interro-negative form

Simple form	V-ing form
mustn't I wash? mustn't you wash? mustn't he wash? mustn't we wash? mustn't you wash? mustn't they wash?	mustn't I be washing? mustn't you be washing? mustn't he be washing? mustn't we be washing? mustn't you be washing? mustn't they be washing?
Perfect	V-ing perfect
mustn't I have washed? mustn't you have washed? mustn't he have washed? mustn't we have washed? mustn't you have washed? mustn't they have washed?	mustn't I have been washing? mustn't you have been washing? mustn't he have been washing? mustn't we have been washing? mustn't you have been washing? mustn't they have been washing?