I do not ascertain you do not ascertain she does not ascertain we do not ascertain you do not ascertain they do not ascertain
Present continuous
I am not ascertaining you are not ascertaining she is not ascertaining we are not ascertaining you are not ascertaining they are not ascertaining
Preterite
I did not ascertain you did not ascertain she did not ascertain we did not ascertain you did not ascertain they did not ascertain
Preterite continuous
I was not ascertaining you were not ascertaining she was not ascertaining we were not ascertaining you were not ascertaining they were not ascertaining
Present perfect
I have not ascertained you have not ascertained she has not ascertained we have not ascertained you have not ascertained they have not ascertained
Present perfect continuous
I have not been ascertaining you have not been ascertaining she has not been ascertaining we have not been ascertaining you have not been ascertaining they have not been ascertaining
Pluperfect
I had not ascertained you had not ascertained she had not ascertained we had not ascertained you had not ascertained they had not ascertained
Pluperfect continuous
I had not been ascertaining you had not been ascertaining she had not been ascertaining we had not been ascertaining you had not been ascertaining they had not been ascertaining
Future
I will not ascertain you will not ascertain she will not ascertain we will not ascertain you will not ascertain they will not ascertain
Future continuous
I will not be ascertaining you will not be ascertaining she will not be ascertaining we will not be ascertaining you will not be ascertaining they will not be ascertaining
Future perfect
I will not have ascertained you will not have ascertained she will not have ascertained we will not have ascertained you will not have ascertained they will not have ascertained
Future perfect continuous
I will not have been ascertaining you will not have been ascertaining she will not have been ascertaining we will not have been ascertaining you will not have been ascertaining they will not have been ascertaining
Conditional
Present
I would not ascertain you would not ascertain she would not ascertain we would not ascertain you would not ascertain they would not ascertain
Present continuous
I would not be ascertaining you would not be ascertaining she would not be ascertaining we would not be ascertaining you would not be ascertaining they would not be ascertaining
Past
I would not have ascertained you would not have ascertained she would not have ascertained we would not have ascertained you would not have ascertained they would not have ascertained
Past continuous
I would not have been ascertaining you would not have been ascertaining she would not have been ascertaining we would not have been ascertaining you would not have been ascertaining they would not have been ascertaining
Imperative
Imperative
do not ascertain Let's not ascertain do not ascertain