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