must preconceive
Verbo regular: preconceive - preconceived- preconceived

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must preconceive
you must preconceive
he must preconceive
we must preconceive
you must preconceive
they must preconceive 	I must be preconceiving
you must be preconceiving
he must be preconceiving
we must be preconceiving
you must be preconceiving
they must be preconceiving	I must have preconceived
you must have preconceived
he must have preconceived
we must have preconceived
you must have preconceived
they must have preconceived	I must have been preconceiving
you must have been preconceiving
he must have been preconceiving
we must have been preconceiving
you must have been preconceiving
they must have been preconceiving	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not preconceive
you must not preconceive
he must not preconceive
we must not preconceive
you must not preconceive
they must not preconceive 	I must not be preconceiving
you must not be preconceiving
he must not be preconceiving
we must not be preconceiving
you must not be preconceiving
they must not be preconceiving	I must not have preconceived
you must not have preconceived
he must not have preconceived
we must not have preconceived
you must not have preconceived
they must not have preconceived	I must not have been preconceiving
you must not have been preconceiving
he must not have been preconceiving
we must not have been preconceiving
you must not have been preconceiving
they must not have been preconceiving	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I preconceive?
must you preconceive?
must he preconceive?
must we preconceive?
must you preconceive?
must they preconceive? 	must I be preconceiving?
must you be preconceiving?
must he be preconceiving?
must we be preconceiving?
must you be preconceiving?
must they be preconceiving? 	must I have preconceived?
must you have preconceived?
must he have preconceived?
must we have preconceived?
must you have preconceived?
must they have preconceived? 	must I have been preconceiving?
must you have been preconceiving?
must he have been preconceiving?
must we have been preconceiving?
must you have been preconceiving?
must they have been preconceiving? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not preconceive?
must you not preconceive?
must he not preconceive?
must we not preconceive?
must you not preconceive?
must they not preconceive? 	must I not be preconceiving?
must you not be preconceiving?
must he not be preconceiving?
must we not be preconceiving?
must you not be preconceiving?
must they not be preconceiving? 	must I not have preconceived?
must you not have preconceived?
must he not have preconceived?
must we not have preconceived?
must you not have preconceived?
must they not have preconceived? 	must I not have been preconceiving?
must you not have been preconceiving?
must he not have been preconceiving?
must we not have been preconceiving?
must you not have been preconceiving?
must they not have been preconceiving?