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