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