English verb conjugation
MUST JOY

Regular verb: joy - joyed - joyed

Affirmation

Simple form	V-ing form
I must joy you must joy he must joy we must joy you must joy they must joy	I must be joying you must be joying he must be joying we must be joying you must be joying they must be joying
Perfect	V-ing perfect
I must have joyed you must have joyed he must have joyed we must have joyed you must have joyed they must have joyed	I must have been joying you must have been joying he must have been joying we must have been joying you must have been joying they must have been joying

Negation

Simple form	V-ing form
I mustn't joy you mustn't joy he mustn't joy we mustn't joy you mustn't joy they mustn't joy	I mustn't be joying you mustn't be joying he mustn't be joying we mustn't be joying you mustn't be joying they mustn't be joying
Perfect	V-ing perfect
I mustn't have joyed you mustn't have joyed he mustn't have joyed we mustn't have joyed you mustn't have joyed they mustn't have joyed	I mustn't have been joying you mustn't have been joying he mustn't have been joying we mustn't have been joying you mustn't have been joying they mustn't have been joying

Interrogative form

Simple form	V-ing form
must I joy? must you joy? must he joy? must we joy? must you joy? must they joy?	must I be joying? must you be joying? must he be joying? must we be joying? must you be joying? must they be joying?
Perfect	V-ing perfect
must I have joyed? must you have joyed? must he have joyed? must we have joyed? must you have joyed? must they have joyed?	must I have been joying? must you have been joying? must he have been joying? must we have been joying? must you have been joying? must they have been joying?

Interro-negative form

Simple form	V-ing form
mustn't I joy? mustn't you joy? mustn't he joy? mustn't we joy? mustn't you joy? mustn't they joy?	mustn't I be joying? mustn't you be joying? mustn't he be joying? mustn't we be joying? mustn't you be joying? mustn't they be joying?
Perfect	V-ing perfect
mustn't I have joyed? mustn't you have joyed? mustn't he have joyed? mustn't we have joyed? mustn't you have joyed? mustn't they have joyed?	mustn't I have been joying? mustn't you have been joying? mustn't he have been joying? mustn't we have been joying? mustn't you have been joying? mustn't they have been joying?