English verb conjugation
MUST DISK

Regular verb: disk - disked - disked

Affirmation

Simple form	V-ing form
I must disk you must disk he must disk we must disk you must disk they must disk	I must be disking you must be disking he must be disking we must be disking you must be disking they must be disking
Perfect	V-ing perfect
I must have disked you must have disked he must have disked we must have disked you must have disked they must have disked	I must have been disking you must have been disking he must have been disking we must have been disking you must have been disking they must have been disking

Negation

Simple form	V-ing form
I mustn't disk you mustn't disk he mustn't disk we mustn't disk you mustn't disk they mustn't disk	I mustn't be disking you mustn't be disking he mustn't be disking we mustn't be disking you mustn't be disking they mustn't be disking
Perfect	V-ing perfect
I mustn't have disked you mustn't have disked he mustn't have disked we mustn't have disked you mustn't have disked they mustn't have disked	I mustn't have been disking you mustn't have been disking he mustn't have been disking we mustn't have been disking you mustn't have been disking they mustn't have been disking

Interrogative form

Simple form	V-ing form
must I disk? must you disk? must he disk? must we disk? must you disk? must they disk?	must I be disking? must you be disking? must he be disking? must we be disking? must you be disking? must they be disking?
Perfect	V-ing perfect
must I have disked? must you have disked? must he have disked? must we have disked? must you have disked? must they have disked?	must I have been disking? must you have been disking? must he have been disking? must we have been disking? must you have been disking? must they have been disking?

Interro-negative form

Simple form	V-ing form
mustn't I disk? mustn't you disk? mustn't he disk? mustn't we disk? mustn't you disk? mustn't they disk?	mustn't I be disking? mustn't you be disking? mustn't he be disking? mustn't we be disking? mustn't you be disking? mustn't they be disking?
Perfect	V-ing perfect
mustn't I have disked? mustn't you have disked? mustn't he have disked? mustn't we have disked? mustn't you have disked? mustn't they have disked?	mustn't I have been disking? mustn't you have been disking? mustn't he have been disking? mustn't we have been disking? mustn't you have been disking? mustn't they have been disking?