must judder
Regular verb: judder - juddered- juddered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must judder
you must judder
he must judder
we must judder
you must judder
they must judder 	I must be juddering
you must be juddering
he must be juddering
we must be juddering
you must be juddering
they must be juddering	I must have juddered
you must have juddered
he must have juddered
we must have juddered
you must have juddered
they must have juddered	I must have been juddering
you must have been juddering
he must have been juddering
we must have been juddering
you must have been juddering
they must have been juddering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not judder
you must not judder
he must not judder
we must not judder
you must not judder
they must not judder 	I must not be juddering
you must not be juddering
he must not be juddering
we must not be juddering
you must not be juddering
they must not be juddering	I must not have juddered
you must not have juddered
he must not have juddered
we must not have juddered
you must not have juddered
they must not have juddered	I must not have been juddering
you must not have been juddering
he must not have been juddering
we must not have been juddering
you must not have been juddering
they must not have been juddering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I judder?
must you judder?
must he judder?
must we judder?
must you judder?
must they judder? 	must I be juddering?
must you be juddering?
must he be juddering?
must we be juddering?
must you be juddering?
must they be juddering? 	must I have juddered?
must you have juddered?
must he have juddered?
must we have juddered?
must you have juddered?
must they have juddered? 	must I have been juddering?
must you have been juddering?
must he have been juddering?
must we have been juddering?
must you have been juddering?
must they have been juddering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not judder?
must you not judder?
must he not judder?
must we not judder?
must you not judder?
must they not judder? 	must I not be juddering?
must you not be juddering?
must he not be juddering?
must we not be juddering?
must you not be juddering?
must they not be juddering? 	must I not have juddered?
must you not have juddered?
must he not have juddered?
must we not have juddered?
must you not have juddered?
must they not have juddered? 	must I not have been juddering?
must you not have been juddering?
must he not have been juddering?
must we not have been juddering?
must you not have been juddering?
must they not have been juddering?