must preconceive
Regular verb: preconceive - preconceived- preconceived

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't preconceive
you mustn't preconceive
he mustn't preconceive
we mustn't preconceive
you mustn't preconceive
they mustn't preconceive 	I mustn't be preconceiving
you mustn't be preconceiving
he mustn't be preconceiving
we mustn't be preconceiving
you mustn't be preconceiving
they mustn't be preconceiving	I mustn't have preconceived
you mustn't have preconceived
he mustn't have preconceived
we mustn't have preconceived
you mustn't have preconceived
they mustn't have preconceived	I mustn't have been preconceiving
you mustn't have been preconceiving
he mustn't have been preconceiving
we mustn't have been preconceiving
you mustn't have been preconceiving
they mustn't have been preconceiving	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
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? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I preconceive?
mustn't you preconceive?
mustn't he preconceive?
mustn't we preconceive?
mustn't you preconceive?
mustn't they preconceive? 	mustn't I be preconceiving?
mustn't you be preconceiving?
mustn't he be preconceiving?
mustn't we be preconceiving?
mustn't you be preconceiving?
mustn't they be preconceiving? 	mustn't I have preconceived?
mustn't you have preconceived?
mustn't he have preconceived?
mustn't we have preconceived?
mustn't you have preconceived?
mustn't they have preconceived? 	mustn't I have been preconceiving?
mustn't you have been preconceiving?
mustn't he have been preconceiving?
mustn't we have been preconceiving?
mustn't you have been preconceiving?
mustn't they have been preconceiving?