English verb conjugation
MUST FETTLE

Regular verb: fettle - fettled - fettled

Affirmation

Simple form	V-ing form
I must fettle you must fettle he must fettle we must fettle you must fettle they must fettle	I must be fettling you must be fettling he must be fettling we must be fettling you must be fettling they must be fettling
Perfect	V-ing perfect
I must have fettled you must have fettled he must have fettled we must have fettled you must have fettled they must have fettled	I must have been fettling you must have been fettling he must have been fettling we must have been fettling you must have been fettling they must have been fettling

Negation

Simple form	V-ing form
I must not fettle you must not fettle he must not fettle we must not fettle you must not fettle they must not fettle	I must not be fettling you must not be fettling he must not be fettling we must not be fettling you must not be fettling they must not be fettling
Perfect	V-ing perfect
I must not have fettled you must not have fettled he must not have fettled we must not have fettled you must not have fettled they must not have fettled	I must not have been fettling you must not have been fettling he must not have been fettling we must not have been fettling you must not have been fettling they must not have been fettling

Interrogative form

Simple form	V-ing form
must I fettle? must you fettle? must he fettle? must we fettle? must you fettle? must they fettle?	must I be fettling? must you be fettling? must he be fettling? must we be fettling? must you be fettling? must they be fettling?
Perfect	V-ing perfect
must I have fettled? must you have fettled? must he have fettled? must we have fettled? must you have fettled? must they have fettled?	must I have been fettling? must you have been fettling? must he have been fettling? must we have been fettling? must you have been fettling? must they have been fettling?

Interro-negative form

Simple form	V-ing form
must I not fettle? must you not fettle? must he not fettle? must we not fettle? must you not fettle? must they not fettle?	must I not be fettling? must you not be fettling? must he not be fettling? must we not be fettling? must you not be fettling? must they not be fettling?
Perfect	V-ing perfect
must I not have fettled? must you not have fettled? must he not have fettled? must we not have fettled? must you not have fettled? must they not have fettled?	must I not have been fettling? must you not have been fettling? must he not have been fettling? must we not have been fettling? must you not have been fettling? must they not have been fettling?