must preconceive
Regular verb: preconceive - preconceived- preconceived

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must preconceive
you must preconceive
she must preconceive
we must preconceive
you must preconceive
they must preconceive 	I must be preconceiving
you must be preconceiving
she must be preconceiving
we must be preconceiving
you must be preconceiving
they must be preconceiving	I must have preconceived
you must have preconceived
she 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
she 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 must not preconceive
you must not preconceive
she 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
she 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
she 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
she must not have been preconceiving
we must not have been preconceiving
you must not have been preconceiving
they must not have been preconceiving	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I preconceive?
must you preconceive?
must she preconceive?
must we preconceive?
must you preconceive?
must they preconceive? 	must I be preconceiving?
must you be preconceiving?
must she be preconceiving?
must we be preconceiving?
must you be preconceiving?
must they be preconceiving? 	must I have preconceived?
must you have preconceived?
must she 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 she 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 	
must I not preconceive?
must you not preconceive?
must she 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 she 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 she 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 she not have been preconceiving?
must we not have been preconceiving?
must you not have been preconceiving?
must they not have been preconceiving?