English verb conjugation
MUST SQUARE-DANCE

Regular verb: square-dance - square-danced - square-danced

Affirmation

Simple form	V-ing form
I must square-dance you must square-dance he must square-dance we must square-dance you must square-dance they must square-dance	I must be square-dancing you must be square-dancing he must be square-dancing we must be square-dancing you must be square-dancing they must be square-dancing
Perfect	V-ing perfect
I must have square-danced you must have square-danced he must have square-danced we must have square-danced you must have square-danced they must have square-danced	I must have been square-dancing you must have been square-dancing he must have been square-dancing we must have been square-dancing you must have been square-dancing they must have been square-dancing

Negation

Simple form	V-ing form
I mustn't square-dance you mustn't square-dance he mustn't square-dance we mustn't square-dance you mustn't square-dance they mustn't square-dance	I mustn't be square-dancing you mustn't be square-dancing he mustn't be square-dancing we mustn't be square-dancing you mustn't be square-dancing they mustn't be square-dancing
Perfect	V-ing perfect
I mustn't have square-danced you mustn't have square-danced he mustn't have square-danced we mustn't have square-danced you mustn't have square-danced they mustn't have square-danced	I mustn't have been square-dancing you mustn't have been square-dancing he mustn't have been square-dancing we mustn't have been square-dancing you mustn't have been square-dancing they mustn't have been square-dancing

Interrogative form

Simple form	V-ing form
must I square-dance? must you square-dance? must he square-dance? must we square-dance? must you square-dance? must they square-dance?	must I be square-dancing? must you be square-dancing? must he be square-dancing? must we be square-dancing? must you be square-dancing? must they be square-dancing?
Perfect	V-ing perfect
must I have square-danced? must you have square-danced? must he have square-danced? must we have square-danced? must you have square-danced? must they have square-danced?	must I have been square-dancing? must you have been square-dancing? must he have been square-dancing? must we have been square-dancing? must you have been square-dancing? must they have been square-dancing?

Interro-negative form

Simple form	V-ing form
mustn't I square-dance? mustn't you square-dance? mustn't he square-dance? mustn't we square-dance? mustn't you square-dance? mustn't they square-dance?	mustn't I be square-dancing? mustn't you be square-dancing? mustn't he be square-dancing? mustn't we be square-dancing? mustn't you be square-dancing? mustn't they be square-dancing?
Perfect	V-ing perfect
mustn't I have square-danced? mustn't you have square-danced? mustn't he have square-danced? mustn't we have square-danced? mustn't you have square-danced? mustn't they have square-danced?	mustn't I have been square-dancing? mustn't you have been square-dancing? mustn't he have been square-dancing? mustn't we have been square-dancing? mustn't you have been square-dancing? mustn't they have been square-dancing?