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