English verb conjugation
MUST TUB TUB

Regular verb: tub tub - tub tubed - tub tubed

Warning, this verb may not exist. Conjugation is given as example.

Affirmation

Simple form	V-ing form
I must tub tub you must tub tub he must tub tub we must tub tub you must tub tub they must tub tub	I must be tub tubing you must be tub tubing he must be tub tubing we must be tub tubing you must be tub tubing they must be tub tubing
Perfect	V-ing perfect
I must have tub tubed you must have tub tubed he must have tub tubed we must have tub tubed you must have tub tubed they must have tub tubed	I must have been tub tubing you must have been tub tubing he must have been tub tubing we must have been tub tubing you must have been tub tubing they must have been tub tubing

Negation

Simple form	V-ing form
I mustn't tub tub you mustn't tub tub he mustn't tub tub we mustn't tub tub you mustn't tub tub they mustn't tub tub	I mustn't be tub tubing you mustn't be tub tubing he mustn't be tub tubing we mustn't be tub tubing you mustn't be tub tubing they mustn't be tub tubing
Perfect	V-ing perfect
I mustn't have tub tubed you mustn't have tub tubed he mustn't have tub tubed we mustn't have tub tubed you mustn't have tub tubed they mustn't have tub tubed	I mustn't have been tub tubing you mustn't have been tub tubing he mustn't have been tub tubing we mustn't have been tub tubing you mustn't have been tub tubing they mustn't have been tub tubing

Interrogative form

Simple form	V-ing form
must I tub tub? must you tub tub? must he tub tub? must we tub tub? must you tub tub? must they tub tub?	must I be tub tubing? must you be tub tubing? must he be tub tubing? must we be tub tubing? must you be tub tubing? must they be tub tubing?
Perfect	V-ing perfect
must I have tub tubed? must you have tub tubed? must he have tub tubed? must we have tub tubed? must you have tub tubed? must they have tub tubed?	must I have been tub tubing? must you have been tub tubing? must he have been tub tubing? must we have been tub tubing? must you have been tub tubing? must they have been tub tubing?

Interro-negative form

Simple form	V-ing form
mustn't I tub tub? mustn't you tub tub? mustn't he tub tub? mustn't we tub tub? mustn't you tub tub? mustn't they tub tub?	mustn't I be tub tubing? mustn't you be tub tubing? mustn't he be tub tubing? mustn't we be tub tubing? mustn't you be tub tubing? mustn't they be tub tubing?
Perfect	V-ing perfect
mustn't I have tub tubed? mustn't you have tub tubed? mustn't he have tub tubed? mustn't we have tub tubed? mustn't you have tub tubed? mustn't they have tub tubed?	mustn't I have been tub tubing? mustn't you have been tub tubing? mustn't he have been tub tubing? mustn't we have been tub tubing? mustn't you have been tub tubing? mustn't they have been tub tubing?