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 must not whittle you must not whittle he must not whittle we must not whittle you must not whittle they must not whittle	I must not be whittling you must not be whittling he must not be whittling we must not be whittling you must not be whittling they must not be whittling
Perfect	V-ing perfect
I must not have whittled you must not have whittled he must not have whittled we must not have whittled you must not have whittled they must not have whittled	I must not have been whittling you must not have been whittling he must not have been whittling we must not have been whittling you must not have been whittling they must not 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
must I not whittle? must you not whittle? must he not whittle? must we not whittle? must you not whittle? must they not whittle?	must I not be whittling? must you not be whittling? must he not be whittling? must we not be whittling? must you not be whittling? must they not be whittling?
Perfect	V-ing perfect
must I not have whittled? must you not have whittled? must he not have whittled? must we not have whittled? must you not have whittled? must they not have whittled?	must I not have been whittling? must you not have been whittling? must he not have been whittling? must we not have been whittling? must you not have been whittling? must they not have been whittling?