must croak
Verbe régulier : croak - croaked- croaked
Traduction française : coasser - dire d'une voix rauque ou éraillée 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must croak
you must croak
she must croak
we must croak
you must croak
they must croak 	I must be croaking
you must be croaking
she must be croaking
we must be croaking
you must be croaking
they must be croaking	I must have croaked
you must have croaked
she must have croaked
we must have croaked
you must have croaked
they must have croaked	I must have been croaking
you must have been croaking
she must have been croaking
we must have been croaking
you must have been croaking
they must have been croaking	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must not croak
you must not croak
she must not croak
we must not croak
you must not croak
they must not croak 	I must not be croaking
you must not be croaking
she must not be croaking
we must not be croaking
you must not be croaking
they must not be croaking	I must not have croaked
you must not have croaked
she must not have croaked
we must not have croaked
you must not have croaked
they must not have croaked	I must not have been croaking
you must not have been croaking
she must not have been croaking
we must not have been croaking
you must not have been croaking
they must not have been croaking	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I croak?
must you croak?
must she croak?
must we croak?
must you croak?
must they croak? 	must I be croaking?
must you be croaking?
must she be croaking?
must we be croaking?
must you be croaking?
must they be croaking? 	must I have croaked?
must you have croaked?
must she have croaked?
must we have croaked?
must you have croaked?
must they have croaked? 	must I have been croaking?
must you have been croaking?
must she have been croaking?
must we have been croaking?
must you have been croaking?
must they have been croaking? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I not croak?
must you not croak?
must she not croak?
must we not croak?
must you not croak?
must they not croak? 	must I not be croaking?
must you not be croaking?
must she not be croaking?
must we not be croaking?
must you not be croaking?
must they not be croaking? 	must I not have croaked?
must you not have croaked?
must she not have croaked?
must we not have croaked?
must you not have croaked?
must they not have croaked? 	must I not have been croaking?
must you not have been croaking?
must she not have been croaking?
must we not have been croaking?
must you not have been croaking?
must they not have been croaking?