I will preascertain you will preascertain he will preascertain we will preascertain you will preascertain they will preascertain
V-ing form
I will be preascertaining you will be preascertaining he will be preascertaining we will be preascertaining you will be preascertaining they will be preascertaining
Perfect
I will have preascertained you will have preascertained he will have preascertained we will have preascertained you will have preascertained they will have preascertained
V-ing perfect
I will have been preascertaining you will have been preascertaining he will have been preascertaining we will have been preascertaining you will have been preascertaining they will have been preascertaining
Negation
Simple form
I will not preascertain you will not preascertain he will not preascertain we will not preascertain you will not preascertain they will not preascertain
V-ing form
I will not be preascertaining you will not be preascertaining he will not be preascertaining we will not be preascertaining you will not be preascertaining they will not be preascertaining
Perfect
I will not have preascertained you will not have preascertained he will not have preascertained we will not have preascertained you will not have preascertained they will not have preascertained
V-ing perfect
I will not have been preascertaining you will not have been preascertaining he will not have been preascertaining we will not have been preascertaining you will not have been preascertaining they will not have been preascertaining
Interrogative form
Simple form
will I preascertain? will you preascertain? will he preascertain? will we preascertain? will you preascertain? will they preascertain?
V-ing form
will I be preascertaining? will you be preascertaining? will he be preascertaining? will we be preascertaining? will you be preascertaining? will they be preascertaining?
Perfect
will I have preascertained? will you have preascertained? will he have preascertained? will we have preascertained? will you have preascertained? will they have preascertained?
V-ing perfect
will I have been preascertaining? will you have been preascertaining? will he have been preascertaining? will we have been preascertaining? will you have been preascertaining? will they have been preascertaining?
Interro-negative form
Simple form
will I not preascertain? will you not preascertain? will he not preascertain? will we not preascertain? will you not preascertain? will they not preascertain?
V-ing form
will I not be preascertaining? will you not be preascertaining? will he not be preascertaining? will we not be preascertaining? will you not be preascertaining? will they not be preascertaining?
Perfect
will I not have preascertained? will you not have preascertained? will he not have preascertained? will we not have preascertained? will you not have preascertained? will they not have preascertained?
V-ing perfect
will I not have been preascertaining? will you not have been preascertaining? will he not have been preascertaining? will we not have been preascertaining? will you not have been preascertaining? will they not have been preascertaining?