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 mustn't brittle you mustn't brittle he mustn't brittle we mustn't brittle you mustn't brittle they mustn't brittle	I mustn't be brittling you mustn't be brittling he mustn't be brittling we mustn't be brittling you mustn't be brittling they mustn't be brittling
Perfect	V-ing perfect
I mustn't have brittled you mustn't have brittled he mustn't have brittled we mustn't have brittled you mustn't have brittled they mustn't have brittled	I mustn't have been brittling you mustn't have been brittling he mustn't have been brittling we mustn't have been brittling you mustn't have been brittling they mustn't 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
mustn't I brittle? mustn't you brittle? mustn't he brittle? mustn't we brittle? mustn't you brittle? mustn't they brittle?	mustn't I be brittling? mustn't you be brittling? mustn't he be brittling? mustn't we be brittling? mustn't you be brittling? mustn't they be brittling?
Perfect	V-ing perfect
mustn't I have brittled? mustn't you have brittled? mustn't he have brittled? mustn't we have brittled? mustn't you have brittled? mustn't they have brittled?	mustn't I have been brittling? mustn't you have been brittling? mustn't he have been brittling? mustn't we have been brittling? mustn't you have been brittling? mustn't they have been brittling?