I don't ascertain you don't ascertain he doesn't ascertain we don't ascertain you don't ascertain they don't ascertain
Present continuous
I'm not ascertaining you aren't ascertaining he isn't ascertaining we aren't ascertaining you aren't ascertaining they aren't ascertaining
Preterite
I didn't ascertain you didn't ascertain he didn't ascertain we didn't ascertain you didn't ascertain they didn't ascertain
Preterite continuous
I wasn't ascertaining you weren't ascertaining he wasn't ascertaining we weren't ascertaining you weren't ascertaining they weren't ascertaining
Present perfect
I haven't ascertained you haven't ascertained he hasn't ascertained we haven't ascertained you haven't ascertained they haven't ascertained
Present perfect continuous
I haven't been ascertaining you haven't been ascertaining he hasn't been ascertaining we haven't been ascertaining you haven't been ascertaining they haven't been ascertaining
Pluperfect
I hadn't ascertained you hadn't ascertained he hadn't ascertained we hadn't ascertained you hadn't ascertained they hadn't ascertained
Pluperfect continuous
I hadn't been ascertaining you hadn't been ascertaining he hadn't been ascertaining we hadn't been ascertaining you hadn't been ascertaining they hadn't been ascertaining
Future
I won't ascertain you won't ascertain he won't ascertain we won't ascertain you won't ascertain they won't ascertain
Future continuous
I won't be ascertaining you won't be ascertaining he won't be ascertaining we won't be ascertaining you won't be ascertaining they won't be ascertaining
Future perfect
I won't have ascertained you won't have ascertained he won't have ascertained we won't have ascertained you won't have ascertained they won't have ascertained
Future perfect continuous
I won't have been ascertaining you won't have been ascertaining he won't have been ascertaining we won't have been ascertaining you won't have been ascertaining they won't have been ascertaining
Conditional
Present
I wouldn't ascertain you wouldn't ascertain he wouldn't ascertain we wouldn't ascertain you wouldn't ascertain they wouldn't ascertain
Present continuous
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
Past
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
Past continuous
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
Imperative
Imperative
do not ascertain Let's not ascertain do not ascertain