Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I must kid so you must kid so she must kid so we must kid so you must kid so they must kid so
V-ing form
I must be kid soing you must be kid soing she must be kid soing we must be kid soing you must be kid soing they must be kid soing
Perfect
I must have kid soed you must have kid soed she must have kid soed we must have kid soed you must have kid soed they must have kid soed
V-ing perfect
I must have been kid soing you must have been kid soing she must have been kid soing we must have been kid soing you must have been kid soing they must have been kid soing
Negation
Simple form
I mustn't kid so you mustn't kid so she mustn't kid so we mustn't kid so you mustn't kid so they mustn't kid so
V-ing form
I mustn't be kid soing you mustn't be kid soing she mustn't be kid soing we mustn't be kid soing you mustn't be kid soing they mustn't be kid soing
Perfect
I mustn't have kid soed you mustn't have kid soed she mustn't have kid soed we mustn't have kid soed you mustn't have kid soed they mustn't have kid soed
V-ing perfect
I mustn't have been kid soing you mustn't have been kid soing she mustn't have been kid soing we mustn't have been kid soing you mustn't have been kid soing they mustn't have been kid soing
Interrogative form
Simple form
must I kid so? must you kid so? must she kid so? must we kid so? must you kid so? must they kid so?
V-ing form
must I be kid soing? must you be kid soing? must she be kid soing? must we be kid soing? must you be kid soing? must they be kid soing?
Perfect
must I have kid soed? must you have kid soed? must she have kid soed? must we have kid soed? must you have kid soed? must they have kid soed?
V-ing perfect
must I have been kid soing? must you have been kid soing? must she have been kid soing? must we have been kid soing? must you have been kid soing? must they have been kid soing?
Interro-negative form
Simple form
mustn't I kid so? mustn't you kid so? mustn't she kid so? mustn't we kid so? mustn't you kid so? mustn't they kid so?
V-ing form
mustn't I be kid soing? mustn't you be kid soing? mustn't she be kid soing? mustn't we be kid soing? mustn't you be kid soing? mustn't they be kid soing?
Perfect
mustn't I have kid soed? mustn't you have kid soed? mustn't she have kid soed? mustn't we have kid soed? mustn't you have kid soed? mustn't they have kid soed?
V-ing perfect
mustn't I have been kid soing? mustn't you have been kid soing? mustn't she have been kid soing? mustn't we have been kid soing? mustn't you have been kid soing? mustn't they have been kid soing?