must extenuate
Verbe régulier : extenuate - extenuated- extenuated

Affirmation 	
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I must extenuate
you must extenuate
she must extenuate
we must extenuate
you must extenuate
they must extenuate 	I must be extenuating
you must be extenuating
she must be extenuating
we must be extenuating
you must be extenuating
they must be extenuating	I must have extenuated
you must have extenuated
she must have extenuated
we must have extenuated
you must have extenuated
they must have extenuated	I must have been extenuating
you must have been extenuating
she must have been extenuating
we must have been extenuating
you must have been extenuating
they must have been extenuating	

Négation 	
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I must not extenuate
you must not extenuate
she must not extenuate
we must not extenuate
you must not extenuate
they must not extenuate 	I must not be extenuating
you must not be extenuating
she must not be extenuating
we must not be extenuating
you must not be extenuating
they must not be extenuating	I must not have extenuated
you must not have extenuated
she must not have extenuated
we must not have extenuated
you must not have extenuated
they must not have extenuated	I must not have been extenuating
you must not have been extenuating
she must not have been extenuating
we must not have been extenuating
you must not have been extenuating
they must not have been extenuating	

Forme interrogative 	
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must I extenuate?
must you extenuate?
must she extenuate?
must we extenuate?
must you extenuate?
must they extenuate? 	must I be extenuating?
must you be extenuating?
must she be extenuating?
must we be extenuating?
must you be extenuating?
must they be extenuating? 	must I have extenuated?
must you have extenuated?
must she have extenuated?
must we have extenuated?
must you have extenuated?
must they have extenuated? 	must I have been extenuating?
must you have been extenuating?
must she have been extenuating?
must we have been extenuating?
must you have been extenuating?
must they have been extenuating? 	

Forme interro-négative 	
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must I not extenuate?
must you not extenuate?
must she not extenuate?
must we not extenuate?
must you not extenuate?
must they not extenuate? 	must I not be extenuating?
must you not be extenuating?
must she not be extenuating?
must we not be extenuating?
must you not be extenuating?
must they not be extenuating? 	must I not have extenuated?
must you not have extenuated?
must she not have extenuated?
must we not have extenuated?
must you not have extenuated?
must they not have extenuated? 	must I not have been extenuating?
must you not have been extenuating?
must she not have been extenuating?
must we not have been extenuating?
must you not have been extenuating?
must they not have been extenuating?