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