English verb conjugation
MUST BABBLE

Regular verb: babble - babbled - babbled

Affirmation

Simple form	V-ing form
I must babble you must babble he must babble we must babble you must babble they must babble	I must be babbling you must be babbling he must be babbling we must be babbling you must be babbling they must be babbling
Perfect	V-ing perfect
I must have babbled you must have babbled he must have babbled we must have babbled you must have babbled they must have babbled	I must have been babbling you must have been babbling he must have been babbling we must have been babbling you must have been babbling they must have been babbling

Negation

Simple form	V-ing form
I must not babble you must not babble he must not babble we must not babble you must not babble they must not babble	I must not be babbling you must not be babbling he must not be babbling we must not be babbling you must not be babbling they must not be babbling
Perfect	V-ing perfect
I must not have babbled you must not have babbled he must not have babbled we must not have babbled you must not have babbled they must not have babbled	I must not have been babbling you must not have been babbling he must not have been babbling we must not have been babbling you must not have been babbling they must not have been babbling

Interrogative form

Simple form	V-ing form
must I babble? must you babble? must he babble? must we babble? must you babble? must they babble?	must I be babbling? must you be babbling? must he be babbling? must we be babbling? must you be babbling? must they be babbling?
Perfect	V-ing perfect
must I have babbled? must you have babbled? must he have babbled? must we have babbled? must you have babbled? must they have babbled?	must I have been babbling? must you have been babbling? must he have been babbling? must we have been babbling? must you have been babbling? must they have been babbling?

Interro-negative form

Simple form	V-ing form
must I not babble? must you not babble? must he not babble? must we not babble? must you not babble? must they not babble?	must I not be babbling? must you not be babbling? must he not be babbling? must we not be babbling? must you not be babbling? must they not be babbling?
Perfect	V-ing perfect
must I not have babbled? must you not have babbled? must he not have babbled? must we not have babbled? must you not have babbled? must they not have babbled?	must I not have been babbling? must you not have been babbling? must he not have been babbling? must we not have been babbling? must you not have been babbling? must they not have been babbling?