English verb conjugation
MUST EMBRITTLE

Regular verb: embrittle - embrittled - embrittled

Affirmation

Simple form	V-ing form
I must embrittle you must embrittle he must embrittle we must embrittle you must embrittle they must embrittle	I must be embrittling you must be embrittling he must be embrittling we must be embrittling you must be embrittling they must be embrittling
Perfect	V-ing perfect
I must have embrittled you must have embrittled he must have embrittled we must have embrittled you must have embrittled they must have embrittled	I must have been embrittling you must have been embrittling he must have been embrittling we must have been embrittling you must have been embrittling they must have been embrittling

Negation

Simple form	V-ing form
I must not embrittle you must not embrittle he must not embrittle we must not embrittle you must not embrittle they must not embrittle	I must not be embrittling you must not be embrittling he must not be embrittling we must not be embrittling you must not be embrittling they must not be embrittling
Perfect	V-ing perfect
I must not have embrittled you must not have embrittled he must not have embrittled we must not have embrittled you must not have embrittled they must not have embrittled	I must not have been embrittling you must not have been embrittling he must not have been embrittling we must not have been embrittling you must not have been embrittling they must not have been embrittling

Interrogative form

Simple form	V-ing form
must I embrittle? must you embrittle? must he embrittle? must we embrittle? must you embrittle? must they embrittle?	must I be embrittling? must you be embrittling? must he be embrittling? must we be embrittling? must you be embrittling? must they be embrittling?
Perfect	V-ing perfect
must I have embrittled? must you have embrittled? must he have embrittled? must we have embrittled? must you have embrittled? must they have embrittled?	must I have been embrittling? must you have been embrittling? must he have been embrittling? must we have been embrittling? must you have been embrittling? must they have been embrittling?

Interro-negative form

Simple form	V-ing form
must I not embrittle? must you not embrittle? must he not embrittle? must we not embrittle? must you not embrittle? must they not embrittle?	must I not be embrittling? must you not be embrittling? must he not be embrittling? must we not be embrittling? must you not be embrittling? must they not be embrittling?
Perfect	V-ing perfect
must I not have embrittled? must you not have embrittled? must he not have embrittled? must we not have embrittled? must you not have embrittled? must they not have embrittled?	must I not have been embrittling? must you not have been embrittling? must he not have been embrittling? must we not have been embrittling? must you not have been embrittling? must they not have been embrittling?