English verb conjugation
MUST CONFAB

Regular verb: confab - confabed - confabed

Affirmation

Simple form	V-ing form
I must confab you must confab he must confab we must confab you must confab they must confab	I must be confabing you must be confabing he must be confabing we must be confabing you must be confabing they must be confabing
Perfect	V-ing perfect
I must have confabed you must have confabed he must have confabed we must have confabed you must have confabed they must have confabed	I must have been confabing you must have been confabing he must have been confabing we must have been confabing you must have been confabing they must have been confabing

Negation

Simple form	V-ing form
I must not confab you must not confab he must not confab we must not confab you must not confab they must not confab	I must not be confabing you must not be confabing he must not be confabing we must not be confabing you must not be confabing they must not be confabing
Perfect	V-ing perfect
I must not have confabed you must not have confabed he must not have confabed we must not have confabed you must not have confabed they must not have confabed	I must not have been confabing you must not have been confabing he must not have been confabing we must not have been confabing you must not have been confabing they must not have been confabing

Interrogative form

Simple form	V-ing form
must I confab? must you confab? must he confab? must we confab? must you confab? must they confab?	must I be confabing? must you be confabing? must he be confabing? must we be confabing? must you be confabing? must they be confabing?
Perfect	V-ing perfect
must I have confabed? must you have confabed? must he have confabed? must we have confabed? must you have confabed? must they have confabed?	must I have been confabing? must you have been confabing? must he have been confabing? must we have been confabing? must you have been confabing? must they have been confabing?

Interro-negative form

Simple form	V-ing form
must I not confab? must you not confab? must he not confab? must we not confab? must you not confab? must they not confab?	must I not be confabing? must you not be confabing? must he not be confabing? must we not be confabing? must you not be confabing? must they not be confabing?
Perfect	V-ing perfect
must I not have confabed? must you not have confabed? must he not have confabed? must we not have confabed? must you not have confabed? must they not have confabed?	must I not have been confabing? must you not have been confabing? must he not have been confabing? must we not have been confabing? must you not have been confabing? must they not have been confabing?