must featherbed
Regular verb: featherbed - featherbeded- featherbeded

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must featherbed
you must featherbed
she must featherbed
we must featherbed
you must featherbed
they must featherbed 	I must be featherbeding
you must be featherbeding
she must be featherbeding
we must be featherbeding
you must be featherbeding
they must be featherbeding	I must have featherbeded
you must have featherbeded
she must have featherbeded
we must have featherbeded
you must have featherbeded
they must have featherbeded	I must have been featherbeding
you must have been featherbeding
she must have been featherbeding
we must have been featherbeding
you must have been featherbeding
they must have been featherbeding	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't featherbed
you mustn't featherbed
she mustn't featherbed
we mustn't featherbed
you mustn't featherbed
they mustn't featherbed 	I mustn't be featherbeding
you mustn't be featherbeding
she mustn't be featherbeding
we mustn't be featherbeding
you mustn't be featherbeding
they mustn't be featherbeding	I mustn't have featherbeded
you mustn't have featherbeded
she mustn't have featherbeded
we mustn't have featherbeded
you mustn't have featherbeded
they mustn't have featherbeded	I mustn't have been featherbeding
you mustn't have been featherbeding
she mustn't have been featherbeding
we mustn't have been featherbeding
you mustn't have been featherbeding
they mustn't have been featherbeding	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I featherbed?
must you featherbed?
must she featherbed?
must we featherbed?
must you featherbed?
must they featherbed? 	must I be featherbeding?
must you be featherbeding?
must she be featherbeding?
must we be featherbeding?
must you be featherbeding?
must they be featherbeding? 	must I have featherbeded?
must you have featherbeded?
must she have featherbeded?
must we have featherbeded?
must you have featherbeded?
must they have featherbeded? 	must I have been featherbeding?
must you have been featherbeding?
must she have been featherbeding?
must we have been featherbeding?
must you have been featherbeding?
must they have been featherbeding? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I featherbed?
mustn't you featherbed?
mustn't she featherbed?
mustn't we featherbed?
mustn't you featherbed?
mustn't they featherbed? 	mustn't I be featherbeding?
mustn't you be featherbeding?
mustn't she be featherbeding?
mustn't we be featherbeding?
mustn't you be featherbeding?
mustn't they be featherbeding? 	mustn't I have featherbeded?
mustn't you have featherbeded?
mustn't she have featherbeded?
mustn't we have featherbeded?
mustn't you have featherbeded?
mustn't they have featherbeded? 	mustn't I have been featherbeding?
mustn't you have been featherbeding?
mustn't she have been featherbeding?
mustn't we have been featherbeding?
mustn't you have been featherbeding?
mustn't they have been featherbeding?