must curd
Regular verb: curd - curded- curded

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must curd
you must curd
she must curd
we must curd
you must curd
they must curd 	I must be curding
you must be curding
she must be curding
we must be curding
you must be curding
they must be curding	I must have curded
you must have curded
she must have curded
we must have curded
you must have curded
they must have curded	I must have been curding
you must have been curding
she must have been curding
we must have been curding
you must have been curding
they must have been curding	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't curd
you mustn't curd
she mustn't curd
we mustn't curd
you mustn't curd
they mustn't curd 	I mustn't be curding
you mustn't be curding
she mustn't be curding
we mustn't be curding
you mustn't be curding
they mustn't be curding	I mustn't have curded
you mustn't have curded
she mustn't have curded
we mustn't have curded
you mustn't have curded
they mustn't have curded	I mustn't have been curding
you mustn't have been curding
she mustn't have been curding
we mustn't have been curding
you mustn't have been curding
they mustn't have been curding	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I curd?
must you curd?
must she curd?
must we curd?
must you curd?
must they curd? 	must I be curding?
must you be curding?
must she be curding?
must we be curding?
must you be curding?
must they be curding? 	must I have curded?
must you have curded?
must she have curded?
must we have curded?
must you have curded?
must they have curded? 	must I have been curding?
must you have been curding?
must she have been curding?
must we have been curding?
must you have been curding?
must they have been curding? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I curd?
mustn't you curd?
mustn't she curd?
mustn't we curd?
mustn't you curd?
mustn't they curd? 	mustn't I be curding?
mustn't you be curding?
mustn't she be curding?
mustn't we be curding?
mustn't you be curding?
mustn't they be curding? 	mustn't I have curded?
mustn't you have curded?
mustn't she have curded?
mustn't we have curded?
mustn't you have curded?
mustn't they have curded? 	mustn't I have been curding?
mustn't you have been curding?
mustn't she have been curding?
mustn't we have been curding?
mustn't you have been curding?
mustn't they have been curding?