must trephine
Verbe régulier : trephine - trephined- trephined

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must trephine
you must trephine
she must trephine
we must trephine
you must trephine
they must trephine 	I must be trephining
you must be trephining
she must be trephining
we must be trephining
you must be trephining
they must be trephining	I must have trephined
you must have trephined
she must have trephined
we must have trephined
you must have trephined
they must have trephined	I must have been trephining
you must have been trephining
she must have been trephining
we must have been trephining
you must have been trephining
they must have been trephining	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must not trephine
you must not trephine
she must not trephine
we must not trephine
you must not trephine
they must not trephine 	I must not be trephining
you must not be trephining
she must not be trephining
we must not be trephining
you must not be trephining
they must not be trephining	I must not have trephined
you must not have trephined
she must not have trephined
we must not have trephined
you must not have trephined
they must not have trephined	I must not have been trephining
you must not have been trephining
she must not have been trephining
we must not have been trephining
you must not have been trephining
they must not have been trephining	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I trephine?
must you trephine?
must she trephine?
must we trephine?
must you trephine?
must they trephine? 	must I be trephining?
must you be trephining?
must she be trephining?
must we be trephining?
must you be trephining?
must they be trephining? 	must I have trephined?
must you have trephined?
must she have trephined?
must we have trephined?
must you have trephined?
must they have trephined? 	must I have been trephining?
must you have been trephining?
must she have been trephining?
must we have been trephining?
must you have been trephining?
must they have been trephining? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I not trephine?
must you not trephine?
must she not trephine?
must we not trephine?
must you not trephine?
must they not trephine? 	must I not be trephining?
must you not be trephining?
must she not be trephining?
must we not be trephining?
must you not be trephining?
must they not be trephining? 	must I not have trephined?
must you not have trephined?
must she not have trephined?
must we not have trephined?
must you not have trephined?
must they not have trephined? 	must I not have been trephining?
must you not have been trephining?
must she not have been trephining?
must we not have been trephining?
must you not have been trephining?
must they not have been trephining?