English verb conjugation
MUST FOSSILISE

Regular verb: fossilise - fossilised - fossilised

Affirmation

Simple form	V-ing form
I must fossilise you must fossilise he must fossilise we must fossilise you must fossilise they must fossilise	I must be fossilising you must be fossilising he must be fossilising we must be fossilising you must be fossilising they must be fossilising
Perfect	V-ing perfect
I must have fossilised you must have fossilised he must have fossilised we must have fossilised you must have fossilised they must have fossilised	I must have been fossilising you must have been fossilising he must have been fossilising we must have been fossilising you must have been fossilising they must have been fossilising

Negation

Simple form	V-ing form
I must not fossilise you must not fossilise he must not fossilise we must not fossilise you must not fossilise they must not fossilise	I must not be fossilising you must not be fossilising he must not be fossilising we must not be fossilising you must not be fossilising they must not be fossilising
Perfect	V-ing perfect
I must not have fossilised you must not have fossilised he must not have fossilised we must not have fossilised you must not have fossilised they must not have fossilised	I must not have been fossilising you must not have been fossilising he must not have been fossilising we must not have been fossilising you must not have been fossilising they must not have been fossilising

Interrogative form

Simple form	V-ing form
must I fossilise? must you fossilise? must he fossilise? must we fossilise? must you fossilise? must they fossilise?	must I be fossilising? must you be fossilising? must he be fossilising? must we be fossilising? must you be fossilising? must they be fossilising?
Perfect	V-ing perfect
must I have fossilised? must you have fossilised? must he have fossilised? must we have fossilised? must you have fossilised? must they have fossilised?	must I have been fossilising? must you have been fossilising? must he have been fossilising? must we have been fossilising? must you have been fossilising? must they have been fossilising?

Interro-negative form

Simple form	V-ing form
must I not fossilise? must you not fossilise? must he not fossilise? must we not fossilise? must you not fossilise? must they not fossilise?	must I not be fossilising? must you not be fossilising? must he not be fossilising? must we not be fossilising? must you not be fossilising? must they not be fossilising?
Perfect	V-ing perfect
must I not have fossilised? must you not have fossilised? must he not have fossilised? must we not have fossilised? must you not have fossilised? must they not have fossilised?	must I not have been fossilising? must you not have been fossilising? must he not have been fossilising? must we not have been fossilising? must you not have been fossilising? must they not have been fossilising?