English verb conjugation
MUST FOSSILIZE

Regular verb: fossilize - fossilized - fossilized

Affirmation

Simple form	V-ing form
I must fossilize you must fossilize she must fossilize we must fossilize you must fossilize they must fossilize	I must be fossilizing you must be fossilizing she must be fossilizing we must be fossilizing you must be fossilizing they must be fossilizing
Perfect	V-ing perfect
I must have fossilized you must have fossilized she must have fossilized we must have fossilized you must have fossilized they must have fossilized	I must have been fossilizing you must have been fossilizing she must have been fossilizing we must have been fossilizing you must have been fossilizing they must have been fossilizing

Negation

Simple form	V-ing form
I mustn't fossilize you mustn't fossilize she mustn't fossilize we mustn't fossilize you mustn't fossilize they mustn't fossilize	I mustn't be fossilizing you mustn't be fossilizing she mustn't be fossilizing we mustn't be fossilizing you mustn't be fossilizing they mustn't be fossilizing
Perfect	V-ing perfect
I mustn't have fossilized you mustn't have fossilized she mustn't have fossilized we mustn't have fossilized you mustn't have fossilized they mustn't have fossilized	I mustn't have been fossilizing you mustn't have been fossilizing she mustn't have been fossilizing we mustn't have been fossilizing you mustn't have been fossilizing they mustn't have been fossilizing

Interrogative form

Simple form	V-ing form
must I fossilize? must you fossilize? must she fossilize? must we fossilize? must you fossilize? must they fossilize?	must I be fossilizing? must you be fossilizing? must she be fossilizing? must we be fossilizing? must you be fossilizing? must they be fossilizing?
Perfect	V-ing perfect
must I have fossilized? must you have fossilized? must she have fossilized? must we have fossilized? must you have fossilized? must they have fossilized?	must I have been fossilizing? must you have been fossilizing? must she have been fossilizing? must we have been fossilizing? must you have been fossilizing? must they have been fossilizing?

Interro-negative form

Simple form	V-ing form
mustn't I fossilize? mustn't you fossilize? mustn't she fossilize? mustn't we fossilize? mustn't you fossilize? mustn't they fossilize?	mustn't I be fossilizing? mustn't you be fossilizing? mustn't she be fossilizing? mustn't we be fossilizing? mustn't you be fossilizing? mustn't they be fossilizing?
Perfect	V-ing perfect
mustn't I have fossilized? mustn't you have fossilized? mustn't she have fossilized? mustn't we have fossilized? mustn't you have fossilized? mustn't they have fossilized?	mustn't I have been fossilizing? mustn't you have been fossilizing? mustn't she have been fossilizing? mustn't we have been fossilizing? mustn't you have been fossilizing? mustn't they have been fossilizing?