I do not stifle you do not stifle he does not stifle we do not stifle you do not stifle they do not stifle
Present continuous
I am not stifling you are not stifling he is not stifling we are not stifling you are not stifling they are not stifling
Preterite
I did not stifle you did not stifle he did not stifle we did not stifle you did not stifle they did not stifle
Preterite continuous
I was not stifling you were not stifling he was not stifling we were not stifling you were not stifling they were not stifling
Present perfect
I have not stifled you have not stifled he has not stifled we have not stifled you have not stifled they have not stifled
Present perfect continuous
I have not been stifling you have not been stifling he has not been stifling we have not been stifling you have not been stifling they have not been stifling
Pluperfect
I had not stifled you had not stifled he had not stifled we had not stifled you had not stifled they had not stifled
Pluperfect continuous
I had not been stifling you had not been stifling he had not been stifling we had not been stifling you had not been stifling they had not been stifling
Future
I will not stifle you will not stifle he will not stifle we will not stifle you will not stifle they will not stifle
Future continuous
I will not be stifling you will not be stifling he will not be stifling we will not be stifling you will not be stifling they will not be stifling
Future perfect
I will not have stifled you will not have stifled he will not have stifled we will not have stifled you will not have stifled they will not have stifled
Future perfect continuous
I will not have been stifling you will not have been stifling he will not have been stifling we will not have been stifling you will not have been stifling they will not have been stifling
Conditional
Present
I would not stifle you would not stifle he would not stifle we would not stifle you would not stifle they would not stifle
Present continuous
I would not be stifling you would not be stifling he would not be stifling we would not be stifling you would not be stifling they would not be stifling
Past
I would not have stifled you would not have stifled he would not have stifled we would not have stifled you would not have stifled they would not have stifled
Past continuous
I would not have been stifling you would not have been stifling he would not have been stifling we would not have been stifling you would not have been stifling they would not have been stifling