English verb conjugation
MUST BLUB

Regular verb: blub - blubed - blubed

Affirmation

Simple form	V-ing form
I must blub you must blub he must blub we must blub you must blub they must blub	I must be blubing you must be blubing he must be blubing we must be blubing you must be blubing they must be blubing
Perfect	V-ing perfect
I must have blubed you must have blubed he must have blubed we must have blubed you must have blubed they must have blubed	I must have been blubing you must have been blubing he must have been blubing we must have been blubing you must have been blubing they must have been blubing

Negation

Simple form	V-ing form
I mustn't blub you mustn't blub he mustn't blub we mustn't blub you mustn't blub they mustn't blub	I mustn't be blubing you mustn't be blubing he mustn't be blubing we mustn't be blubing you mustn't be blubing they mustn't be blubing
Perfect	V-ing perfect
I mustn't have blubed you mustn't have blubed he mustn't have blubed we mustn't have blubed you mustn't have blubed they mustn't have blubed	I mustn't have been blubing you mustn't have been blubing he mustn't have been blubing we mustn't have been blubing you mustn't have been blubing they mustn't have been blubing

Interrogative form

Simple form	V-ing form
must I blub? must you blub? must he blub? must we blub? must you blub? must they blub?	must I be blubing? must you be blubing? must he be blubing? must we be blubing? must you be blubing? must they be blubing?
Perfect	V-ing perfect
must I have blubed? must you have blubed? must he have blubed? must we have blubed? must you have blubed? must they have blubed?	must I have been blubing? must you have been blubing? must he have been blubing? must we have been blubing? must you have been blubing? must they have been blubing?

Interro-negative form

Simple form	V-ing form
mustn't I blub? mustn't you blub? mustn't he blub? mustn't we blub? mustn't you blub? mustn't they blub?	mustn't I be blubing? mustn't you be blubing? mustn't he be blubing? mustn't we be blubing? mustn't you be blubing? mustn't they be blubing?
Perfect	V-ing perfect
mustn't I have blubed? mustn't you have blubed? mustn't he have blubed? mustn't we have blubed? mustn't you have blubed? mustn't they have blubed?	mustn't I have been blubing? mustn't you have been blubing? mustn't he have been blubing? mustn't we have been blubing? mustn't you have been blubing? mustn't they have been blubing?