must preplan
Verbo regolare: preplan - preplaned- preplaned

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I must preplan
you must preplan
he must preplan
we must preplan
you must preplan
they must preplan 	I must be preplaning
you must be preplaning
he must be preplaning
we must be preplaning
you must be preplaning
they must be preplaning	I must have preplaned
you must have preplaned
he must have preplaned
we must have preplaned
you must have preplaned
they must have preplaned	I must have been preplaning
you must have been preplaning
he must have been preplaning
we must have been preplaning
you must have been preplaning
they must have been preplaning	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I must not preplan
you must not preplan
he must not preplan
we must not preplan
you must not preplan
they must not preplan 	I must not be preplaning
you must not be preplaning
he must not be preplaning
we must not be preplaning
you must not be preplaning
they must not be preplaning	I must not have preplaned
you must not have preplaned
he must not have preplaned
we must not have preplaned
you must not have preplaned
they must not have preplaned	I must not have been preplaning
you must not have been preplaning
he must not have been preplaning
we must not have been preplaning
you must not have been preplaning
they must not have been preplaning	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
must I preplan?
must you preplan?
must he preplan?
must we preplan?
must you preplan?
must they preplan? 	must I be preplaning?
must you be preplaning?
must he be preplaning?
must we be preplaning?
must you be preplaning?
must they be preplaning? 	must I have preplaned?
must you have preplaned?
must he have preplaned?
must we have preplaned?
must you have preplaned?
must they have preplaned? 	must I have been preplaning?
must you have been preplaning?
must he have been preplaning?
must we have been preplaning?
must you have been preplaning?
must they have been preplaning? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
must I not preplan?
must you not preplan?
must he not preplan?
must we not preplan?
must you not preplan?
must they not preplan? 	must I not be preplaning?
must you not be preplaning?
must he not be preplaning?
must we not be preplaning?
must you not be preplaning?
must they not be preplaning? 	must I not have preplaned?
must you not have preplaned?
must he not have preplaned?
must we not have preplaned?
must you not have preplaned?
must they not have preplaned? 	must I not have been preplaning?
must you not have been preplaning?
must he not have been preplaning?
must we not have been preplaning?
must you not have been preplaning?
must they not have been preplaning?