English verb conjugation
MAY PREASCERTAIN

Regular verb: preascertain - preascertained - preascertained

Affirmation

Simple form	V-ing form
I may preascertain you may preascertain he may preascertain we may preascertain you may preascertain they may preascertain	I may be preascertaining you may be preascertaining he may be preascertaining we may be preascertaining you may be preascertaining they may be preascertaining
Perfect	V-ing perfect
I may have preascertained you may have preascertained he may have preascertained we may have preascertained you may have preascertained they may have preascertained	I may have been preascertaining you may have been preascertaining he may have been preascertaining we may have been preascertaining you may have been preascertaining they may have been preascertaining

Negation

Simple form	V-ing form
I may not preascertain you may not preascertain he may not preascertain we may not preascertain you may not preascertain they may not preascertain	I may not be preascertaining you may not be preascertaining he may not be preascertaining we may not be preascertaining you may not be preascertaining they may not be preascertaining
Perfect	V-ing perfect
I may not have preascertained you may not have preascertained he may not have preascertained we may not have preascertained you may not have preascertained they may not have preascertained	I may not have been preascertaining you may not have been preascertaining he may not have been preascertaining we may not have been preascertaining you may not have been preascertaining they may not have been preascertaining

Interrogative form

Simple form	V-ing form
may I preascertain? may you preascertain? may he preascertain? may we preascertain? may you preascertain? may they preascertain?	may I be preascertaining? may you be preascertaining? may he be preascertaining? may we be preascertaining? may you be preascertaining? may they be preascertaining?
Perfect	V-ing perfect
may I have preascertained? may you have preascertained? may he have preascertained? may we have preascertained? may you have preascertained? may they have preascertained?	may I have been preascertaining? may you have been preascertaining? may he have been preascertaining? may we have been preascertaining? may you have been preascertaining? may they have been preascertaining?

Interro-negative form

Simple form	V-ing form
may I not preascertain? may you not preascertain? may he not preascertain? may we not preascertain? may you not preascertain? may they not preascertain?	may I not be preascertaining? may you not be preascertaining? may he not be preascertaining? may we not be preascertaining? may you not be preascertaining? may they not be preascertaining?
Perfect	V-ing perfect
may I not have preascertained? may you not have preascertained? may he not have preascertained? may we not have preascertained? may you not have preascertained? may they not have preascertained?	may I not have been preascertaining? may you not have been preascertaining? may he not have been preascertaining? may we not have been preascertaining? may you not have been preascertaining? may they not have been preascertaining?