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