must fossilise
Verbe régulier : fossilise - fossilised- fossilised

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must fossilise
you must fossilise
she must fossilise
we must fossilise
you must fossilise
they must fossilise 	I must be fossilising
you must be fossilising
she must be fossilising
we must be fossilising
you must be fossilising
they must be fossilising	I must have fossilised
you must have fossilised
she 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
she must have been fossilising
we must have been fossilising
you must have been fossilising
they must have been fossilising	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must not fossilise
you must not fossilise
she 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
she must not be fossilising
we must not be fossilising
you must not be fossilising
they must not be fossilising	I must not have fossilised
you must not have fossilised
she 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
she must not have been fossilising
we must not have been fossilising
you must not have been fossilising
they must not have been fossilising	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I fossilise?
must you fossilise?
must she fossilise?
must we fossilise?
must you fossilise?
must they fossilise? 	must I be fossilising?
must you be fossilising?
must she be fossilising?
must we be fossilising?
must you be fossilising?
must they be fossilising? 	must I have fossilised?
must you have fossilised?
must she 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 she have been fossilising?
must we have been fossilising?
must you have been fossilising?
must they have been fossilising? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I not fossilise?
must you not fossilise?
must she 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 she not be fossilising?
must we not be fossilising?
must you not be fossilising?
must they not be fossilising? 	must I not have fossilised?
must you not have fossilised?
must she 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 she not have been fossilising?
must we not have been fossilising?
must you not have been fossilising?
must they not have been fossilising?