must fractionate
Verbe régulier : fractionate - fractionated- fractionated

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must fractionate
you must fractionate
she must fractionate
we must fractionate
you must fractionate
they must fractionate 	I must be fractionating
you must be fractionating
she must be fractionating
we must be fractionating
you must be fractionating
they must be fractionating	I must have fractionated
you must have fractionated
she must have fractionated
we must have fractionated
you must have fractionated
they must have fractionated	I must have been fractionating
you must have been fractionating
she must have been fractionating
we must have been fractionating
you must have been fractionating
they must have been fractionating	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must not fractionate
you must not fractionate
she must not fractionate
we must not fractionate
you must not fractionate
they must not fractionate 	I must not be fractionating
you must not be fractionating
she must not be fractionating
we must not be fractionating
you must not be fractionating
they must not be fractionating	I must not have fractionated
you must not have fractionated
she must not have fractionated
we must not have fractionated
you must not have fractionated
they must not have fractionated	I must not have been fractionating
you must not have been fractionating
she must not have been fractionating
we must not have been fractionating
you must not have been fractionating
they must not have been fractionating	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I fractionate?
must you fractionate?
must she fractionate?
must we fractionate?
must you fractionate?
must they fractionate? 	must I be fractionating?
must you be fractionating?
must she be fractionating?
must we be fractionating?
must you be fractionating?
must they be fractionating? 	must I have fractionated?
must you have fractionated?
must she have fractionated?
must we have fractionated?
must you have fractionated?
must they have fractionated? 	must I have been fractionating?
must you have been fractionating?
must she have been fractionating?
must we have been fractionating?
must you have been fractionating?
must they have been fractionating? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I not fractionate?
must you not fractionate?
must she not fractionate?
must we not fractionate?
must you not fractionate?
must they not fractionate? 	must I not be fractionating?
must you not be fractionating?
must she not be fractionating?
must we not be fractionating?
must you not be fractionating?
must they not be fractionating? 	must I not have fractionated?
must you not have fractionated?
must she not have fractionated?
must we not have fractionated?
must you not have fractionated?
must they not have fractionated? 	must I not have been fractionating?
must you not have been fractionating?
must she not have been fractionating?
must we not have been fractionating?
must you not have been fractionating?
must they not have been fractionating?