English verb conjugation
MUST FRIEND

Regular verb: friend - friended - friended

Affirmation

Simple form	V-ing form
I must friend you must friend he must friend we must friend you must friend they must friend	I must be friending you must be friending he must be friending we must be friending you must be friending they must be friending
Perfect	V-ing perfect
I must have friended you must have friended he must have friended we must have friended you must have friended they must have friended	I must have been friending you must have been friending he must have been friending we must have been friending you must have been friending they must have been friending

Negation

Simple form	V-ing form
I must not friend you must not friend he must not friend we must not friend you must not friend they must not friend	I must not be friending you must not be friending he must not be friending we must not be friending you must not be friending they must not be friending
Perfect	V-ing perfect
I must not have friended you must not have friended he must not have friended we must not have friended you must not have friended they must not have friended	I must not have been friending you must not have been friending he must not have been friending we must not have been friending you must not have been friending they must not have been friending

Interrogative form

Simple form	V-ing form
must I friend? must you friend? must he friend? must we friend? must you friend? must they friend?	must I be friending? must you be friending? must he be friending? must we be friending? must you be friending? must they be friending?
Perfect	V-ing perfect
must I have friended? must you have friended? must he have friended? must we have friended? must you have friended? must they have friended?	must I have been friending? must you have been friending? must he have been friending? must we have been friending? must you have been friending? must they have been friending?

Interro-negative form

Simple form	V-ing form
must I not friend? must you not friend? must he not friend? must we not friend? must you not friend? must they not friend?	must I not be friending? must you not be friending? must he not be friending? must we not be friending? must you not be friending? must they not be friending?
Perfect	V-ing perfect
must I not have friended? must you not have friended? must he not have friended? must we not have friended? must you not have friended? must they not have friended?	must I not have been friending? must you not have been friending? must he not have been friending? must we not have been friending? must you not have been friending? must they not have been friending?