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