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
she must preplan
we must preplan
you must preplan
they must preplan 	I must be preplaning
you must be preplaning
she must be preplaning
we must be preplaning
you must be preplaning
they must be preplaning	I must have preplaned
you must have preplaned
she 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
she 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
she 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
she 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
she 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
she 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 she preplan?
must we preplan?
must you preplan?
must they preplan? 	must I be preplaning?
must you be preplaning?
must she be preplaning?
must we be preplaning?
must you be preplaning?
must they be preplaning? 	must I have preplaned?
must you have preplaned?
must she 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 she 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 she 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 she 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 she 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 she not have been preplaning?
must we not have been preplaning?
must you not have been preplaning?
must they not have been preplaning?