English verb conjugation
MUST FEATHER

Regular verb: feather - feathered - feathered

Affirmation

Simple form	V-ing form
I must feather you must feather he must feather we must feather you must feather they must feather	I must be feathering you must be feathering he must be feathering we must be feathering you must be feathering they must be feathering
Perfect	V-ing perfect
I must have feathered you must have feathered he must have feathered we must have feathered you must have feathered they must have feathered	I must have been feathering you must have been feathering he must have been feathering we must have been feathering you must have been feathering they must have been feathering

Negation

Simple form	V-ing form
I mustn't feather you mustn't feather he mustn't feather we mustn't feather you mustn't feather they mustn't feather	I mustn't be feathering you mustn't be feathering he mustn't be feathering we mustn't be feathering you mustn't be feathering they mustn't be feathering
Perfect	V-ing perfect
I mustn't have feathered you mustn't have feathered he mustn't have feathered we mustn't have feathered you mustn't have feathered they mustn't have feathered	I mustn't have been feathering you mustn't have been feathering he mustn't have been feathering we mustn't have been feathering you mustn't have been feathering they mustn't have been feathering

Interrogative form

Simple form	V-ing form
must I feather? must you feather? must he feather? must we feather? must you feather? must they feather?	must I be feathering? must you be feathering? must he be feathering? must we be feathering? must you be feathering? must they be feathering?
Perfect	V-ing perfect
must I have feathered? must you have feathered? must he have feathered? must we have feathered? must you have feathered? must they have feathered?	must I have been feathering? must you have been feathering? must he have been feathering? must we have been feathering? must you have been feathering? must they have been feathering?

Interro-negative form

Simple form	V-ing form
mustn't I feather? mustn't you feather? mustn't he feather? mustn't we feather? mustn't you feather? mustn't they feather?	mustn't I be feathering? mustn't you be feathering? mustn't he be feathering? mustn't we be feathering? mustn't you be feathering? mustn't they be feathering?
Perfect	V-ing perfect
mustn't I have feathered? mustn't you have feathered? mustn't he have feathered? mustn't we have feathered? mustn't you have feathered? mustn't they have feathered?	mustn't I have been feathering? mustn't you have been feathering? mustn't he have been feathering? mustn't we have been feathering? mustn't you have been feathering? mustn't they have been feathering?