I'd be preascertaining you'd be preascertaining he'd be preascertaining we'd be preascertaining you'd be preascertaining they'd be preascertaining
Perfect
I would've preascertained you would've preascertained he would've preascertained we would've preascertained you would've preascertained they would've preascertained
V-ing perfect
I would've been preascertaining you would've been preascertaining he would've been preascertaining we would've been preascertaining you would've been preascertaining they would've been preascertaining
Negation
Simple form
I wouldn't preascertain you wouldn't preascertain he wouldn't preascertain we wouldn't preascertain you wouldn't preascertain they wouldn't preascertain
V-ing form
I wouldn't be preascertaining you wouldn't be preascertaining he wouldn't be preascertaining we wouldn't be preascertaining you wouldn't be preascertaining they wouldn't be preascertaining
Perfect
I wouldn't have preascertained you wouldn't have preascertained he wouldn't have preascertained we wouldn't have preascertained you wouldn't have preascertained they wouldn't have preascertained
V-ing perfect
I wouldn't have been preascertaining you wouldn't have been preascertaining he wouldn't have been preascertaining we wouldn't have been preascertaining you wouldn't have been preascertaining they wouldn't have been preascertaining
Interrogative form
Simple form
would I preascertain? would you preascertain? would he preascertain? would we preascertain? would you preascertain? would they preascertain?
V-ing form
would I be preascertaining? would you be preascertaining? would he be preascertaining? would we be preascertaining? would you be preascertaining? would they be preascertaining?
Perfect
would I have preascertained? would you have preascertained? would he have preascertained? would we have preascertained? would you have preascertained? would they have preascertained?
V-ing perfect
would I have been preascertaining? would you have been preascertaining? would he have been preascertaining? would we have been preascertaining? would you have been preascertaining? would they have been preascertaining?
Interro-negative form
Simple form
wouldn't I preascertain? wouldn't you preascertain? wouldn't he preascertain? wouldn't we preascertain? wouldn't you preascertain? wouldn't they preascertain?
V-ing form
wouldn't I be preascertaining? wouldn't you be preascertaining? wouldn't he be preascertaining? wouldn't we be preascertaining? wouldn't you be preascertaining? wouldn't they be preascertaining?
Perfect
wouldn't I have preascertained? wouldn't you have preascertained? wouldn't he have preascertained? wouldn't we have preascertained? wouldn't you have preascertained? wouldn't they have preascertained?
V-ing perfect
wouldn't I have been preascertaining? wouldn't you have been preascertaining? wouldn't he have been preascertaining? wouldn't we have been preascertaining? wouldn't you have been preascertaining? wouldn't they have been preascertaining?