must kid
Regular verb: kid - kided- kided

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must kid
you must kid
she must kid
we must kid
you must kid
they must kid 	I must be kiding
you must be kiding
she must be kiding
we must be kiding
you must be kiding
they must be kiding	I must have kided
you must have kided
she must have kided
we must have kided
you must have kided
they must have kided	I must have been kiding
you must have been kiding
she must have been kiding
we must have been kiding
you must have been kiding
they must have been kiding	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't kid
you mustn't kid
she mustn't kid
we mustn't kid
you mustn't kid
they mustn't kid 	I mustn't be kiding
you mustn't be kiding
she mustn't be kiding
we mustn't be kiding
you mustn't be kiding
they mustn't be kiding	I mustn't have kided
you mustn't have kided
she mustn't have kided
we mustn't have kided
you mustn't have kided
they mustn't have kided	I mustn't have been kiding
you mustn't have been kiding
she mustn't have been kiding
we mustn't have been kiding
you mustn't have been kiding
they mustn't have been kiding	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I kid?
must you kid?
must she kid?
must we kid?
must you kid?
must they kid? 	must I be kiding?
must you be kiding?
must she be kiding?
must we be kiding?
must you be kiding?
must they be kiding? 	must I have kided?
must you have kided?
must she have kided?
must we have kided?
must you have kided?
must they have kided? 	must I have been kiding?
must you have been kiding?
must she have been kiding?
must we have been kiding?
must you have been kiding?
must they have been kiding? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I kid?
mustn't you kid?
mustn't she kid?
mustn't we kid?
mustn't you kid?
mustn't they kid? 	mustn't I be kiding?
mustn't you be kiding?
mustn't she be kiding?
mustn't we be kiding?
mustn't you be kiding?
mustn't they be kiding? 	mustn't I have kided?
mustn't you have kided?
mustn't she have kided?
mustn't we have kided?
mustn't you have kided?
mustn't they have kided? 	mustn't I have been kiding?
mustn't you have been kiding?
mustn't she have been kiding?
mustn't we have been kiding?
mustn't you have been kiding?
mustn't they have been kiding?