English verb conjugation
MUST WHITTLE

Regular verb: whittle - whittled - whittled

Affirmation

Simple form	V-ing form
I must whittle you must whittle he must whittle we must whittle you must whittle they must whittle	I must be whittling you must be whittling he must be whittling we must be whittling you must be whittling they must be whittling
Perfect	V-ing perfect
I must have whittled you must have whittled he must have whittled we must have whittled you must have whittled they must have whittled	I must have been whittling you must have been whittling he must have been whittling we must have been whittling you must have been whittling they must have been whittling

Negation

Simple form	V-ing form
I mustn't whittle you mustn't whittle he mustn't whittle we mustn't whittle you mustn't whittle they mustn't whittle	I mustn't be whittling you mustn't be whittling he mustn't be whittling we mustn't be whittling you mustn't be whittling they mustn't be whittling
Perfect	V-ing perfect
I mustn't have whittled you mustn't have whittled he mustn't have whittled we mustn't have whittled you mustn't have whittled they mustn't have whittled	I mustn't have been whittling you mustn't have been whittling he mustn't have been whittling we mustn't have been whittling you mustn't have been whittling they mustn't have been whittling

Interrogative form

Simple form	V-ing form
must I whittle? must you whittle? must he whittle? must we whittle? must you whittle? must they whittle?	must I be whittling? must you be whittling? must he be whittling? must we be whittling? must you be whittling? must they be whittling?
Perfect	V-ing perfect
must I have whittled? must you have whittled? must he have whittled? must we have whittled? must you have whittled? must they have whittled?	must I have been whittling? must you have been whittling? must he have been whittling? must we have been whittling? must you have been whittling? must they have been whittling?

Interro-negative form

Simple form	V-ing form
mustn't I whittle? mustn't you whittle? mustn't he whittle? mustn't we whittle? mustn't you whittle? mustn't they whittle?	mustn't I be whittling? mustn't you be whittling? mustn't he be whittling? mustn't we be whittling? mustn't you be whittling? mustn't they be whittling?
Perfect	V-ing perfect
mustn't I have whittled? mustn't you have whittled? mustn't he have whittled? mustn't we have whittled? mustn't you have whittled? mustn't they have whittled?	mustn't I have been whittling? mustn't you have been whittling? mustn't he have been whittling? mustn't we have been whittling? mustn't you have been whittling? mustn't they have been whittling?