English verb conjugation
MUST BRITTLE

Regular verb: brittle - brittled - brittled

Affirmation

Simple form	V-ing form
I must brittle you must brittle he must brittle we must brittle you must brittle they must brittle	I must be brittling you must be brittling he must be brittling we must be brittling you must be brittling they must be brittling
Perfect	V-ing perfect
I must have brittled you must have brittled he must have brittled we must have brittled you must have brittled they must have brittled	I must have been brittling you must have been brittling he must have been brittling we must have been brittling you must have been brittling they must have been brittling

Negation

Simple form	V-ing form
I must not brittle you must not brittle he must not brittle we must not brittle you must not brittle they must not brittle	I must not be brittling you must not be brittling he must not be brittling we must not be brittling you must not be brittling they must not be brittling
Perfect	V-ing perfect
I must not have brittled you must not have brittled he must not have brittled we must not have brittled you must not have brittled they must not have brittled	I must not have been brittling you must not have been brittling he must not have been brittling we must not have been brittling you must not have been brittling they must not have been brittling

Interrogative form

Simple form	V-ing form
must I brittle? must you brittle? must he brittle? must we brittle? must you brittle? must they brittle?	must I be brittling? must you be brittling? must he be brittling? must we be brittling? must you be brittling? must they be brittling?
Perfect	V-ing perfect
must I have brittled? must you have brittled? must he have brittled? must we have brittled? must you have brittled? must they have brittled?	must I have been brittling? must you have been brittling? must he have been brittling? must we have been brittling? must you have been brittling? must they have been brittling?

Interro-negative form

Simple form	V-ing form
must I not brittle? must you not brittle? must he not brittle? must we not brittle? must you not brittle? must they not brittle?	must I not be brittling? must you not be brittling? must he not be brittling? must we not be brittling? must you not be brittling? must they not be brittling?
Perfect	V-ing perfect
must I not have brittled? must you not have brittled? must he not have brittled? must we not have brittled? must you not have brittled? must they not have brittled?	must I not have been brittling? must you not have been brittling? must he not have been brittling? must we not have been brittling? must you not have been brittling? must they not have been brittling?