must crib
Verbe régulier : crib - cribbed- cribbed
Traduction française : plagier - copier 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must crib
you must crib
she must crib
we must crib
you must crib
they must crib 	I must be cribbing
you must be cribbing
she must be cribbing
we must be cribbing
you must be cribbing
they must be cribbing	I must have cribbed
you must have cribbed
she must have cribbed
we must have cribbed
you must have cribbed
they must have cribbed	I must have been cribbing
you must have been cribbing
she must have been cribbing
we must have been cribbing
you must have been cribbing
they must have been cribbing	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must not crib
you must not crib
she must not crib
we must not crib
you must not crib
they must not crib 	I must not be cribbing
you must not be cribbing
she must not be cribbing
we must not be cribbing
you must not be cribbing
they must not be cribbing	I must not have cribbed
you must not have cribbed
she must not have cribbed
we must not have cribbed
you must not have cribbed
they must not have cribbed	I must not have been cribbing
you must not have been cribbing
she must not have been cribbing
we must not have been cribbing
you must not have been cribbing
they must not have been cribbing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I crib?
must you crib?
must she crib?
must we crib?
must you crib?
must they crib? 	must I be cribbing?
must you be cribbing?
must she be cribbing?
must we be cribbing?
must you be cribbing?
must they be cribbing? 	must I have cribbed?
must you have cribbed?
must she have cribbed?
must we have cribbed?
must you have cribbed?
must they have cribbed? 	must I have been cribbing?
must you have been cribbing?
must she have been cribbing?
must we have been cribbing?
must you have been cribbing?
must they have been cribbing? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I not crib?
must you not crib?
must she not crib?
must we not crib?
must you not crib?
must they not crib? 	must I not be cribbing?
must you not be cribbing?
must she not be cribbing?
must we not be cribbing?
must you not be cribbing?
must they not be cribbing? 	must I not have cribbed?
must you not have cribbed?
must she not have cribbed?
must we not have cribbed?
must you not have cribbed?
must they not have cribbed? 	must I not have been cribbing?
must you not have been cribbing?
must she not have been cribbing?
must we not have been cribbing?
must you not have been cribbing?
must they not have been cribbing?