English verb conjugation
MUST PREAPPROVE

Regular verb: preapprove - preapproved - preapproved

Affirmation

Simple form	V-ing form
I must preapprove you must preapprove he must preapprove we must preapprove you must preapprove they must preapprove	I must be preapproving you must be preapproving he must be preapproving we must be preapproving you must be preapproving they must be preapproving
Perfect	V-ing perfect
I must have preapproved you must have preapproved he must have preapproved we must have preapproved you must have preapproved they must have preapproved	I must have been preapproving you must have been preapproving he must have been preapproving we must have been preapproving you must have been preapproving they must have been preapproving

Negation

Simple form	V-ing form
I must not preapprove you must not preapprove he must not preapprove we must not preapprove you must not preapprove they must not preapprove	I must not be preapproving you must not be preapproving he must not be preapproving we must not be preapproving you must not be preapproving they must not be preapproving
Perfect	V-ing perfect
I must not have preapproved you must not have preapproved he must not have preapproved we must not have preapproved you must not have preapproved they must not have preapproved	I must not have been preapproving you must not have been preapproving he must not have been preapproving we must not have been preapproving you must not have been preapproving they must not have been preapproving

Interrogative form

Simple form	V-ing form
must I preapprove? must you preapprove? must he preapprove? must we preapprove? must you preapprove? must they preapprove?	must I be preapproving? must you be preapproving? must he be preapproving? must we be preapproving? must you be preapproving? must they be preapproving?
Perfect	V-ing perfect
must I have preapproved? must you have preapproved? must he have preapproved? must we have preapproved? must you have preapproved? must they have preapproved?	must I have been preapproving? must you have been preapproving? must he have been preapproving? must we have been preapproving? must you have been preapproving? must they have been preapproving?

Interro-negative form

Simple form	V-ing form
must I not preapprove? must you not preapprove? must he not preapprove? must we not preapprove? must you not preapprove? must they not preapprove?	must I not be preapproving? must you not be preapproving? must he not be preapproving? must we not be preapproving? must you not be preapproving? must they not be preapproving?
Perfect	V-ing perfect
must I not have preapproved? must you not have preapproved? must he not have preapproved? must we not have preapproved? must you not have preapproved? must they not have preapproved?	must I not have been preapproving? must you not have been preapproving? must he not have been preapproving? must we not have been preapproving? must you not have been preapproving? must they not have been preapproving?