Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I must curb curb you must curb curb she must curb curb we must curb curb you must curb curb they must curb curb
V-ing form
I must be curb curbing you must be curb curbing she must be curb curbing we must be curb curbing you must be curb curbing they must be curb curbing
Perfect
I must have curb curbed you must have curb curbed she must have curb curbed we must have curb curbed you must have curb curbed they must have curb curbed
V-ing perfect
I must have been curb curbing you must have been curb curbing she must have been curb curbing we must have been curb curbing you must have been curb curbing they must have been curb curbing
Negation
Simple form
I mustn't curb curb you mustn't curb curb she mustn't curb curb we mustn't curb curb you mustn't curb curb they mustn't curb curb
V-ing form
I mustn't be curb curbing you mustn't be curb curbing she mustn't be curb curbing we mustn't be curb curbing you mustn't be curb curbing they mustn't be curb curbing
Perfect
I mustn't have curb curbed you mustn't have curb curbed she mustn't have curb curbed we mustn't have curb curbed you mustn't have curb curbed they mustn't have curb curbed
V-ing perfect
I mustn't have been curb curbing you mustn't have been curb curbing she mustn't have been curb curbing we mustn't have been curb curbing you mustn't have been curb curbing they mustn't have been curb curbing
Interrogative form
Simple form
must I curb curb? must you curb curb? must she curb curb? must we curb curb? must you curb curb? must they curb curb?
V-ing form
must I be curb curbing? must you be curb curbing? must she be curb curbing? must we be curb curbing? must you be curb curbing? must they be curb curbing?
Perfect
must I have curb curbed? must you have curb curbed? must she have curb curbed? must we have curb curbed? must you have curb curbed? must they have curb curbed?
V-ing perfect
must I have been curb curbing? must you have been curb curbing? must she have been curb curbing? must we have been curb curbing? must you have been curb curbing? must they have been curb curbing?
Interro-negative form
Simple form
mustn't I curb curb? mustn't you curb curb? mustn't she curb curb? mustn't we curb curb? mustn't you curb curb? mustn't they curb curb?
V-ing form
mustn't I be curb curbing? mustn't you be curb curbing? mustn't she be curb curbing? mustn't we be curb curbing? mustn't you be curb curbing? mustn't they be curb curbing?
Perfect
mustn't I have curb curbed? mustn't you have curb curbed? mustn't she have curb curbed? mustn't we have curb curbed? mustn't you have curb curbed? mustn't they have curb curbed?
V-ing perfect
mustn't I have been curb curbing? mustn't you have been curb curbing? mustn't she have been curb curbing? mustn't we have been curb curbing? mustn't you have been curb curbing? mustn't they have been curb curbing?