I do not back you do not back she does not back we do not back you do not back they do not back
Present continuous
I am not backing you are not backing she is not backing we are not backing you are not backing they are not backing
Preterite
I did not back you did not back she did not back we did not back you did not back they did not back
Preterite continuous
I was not backing you were not backing she was not backing we were not backing you were not backing they were not backing
Present perfect
I have not backed you have not backed she has not backed we have not backed you have not backed they have not backed
Present perfect continuous
I have not been backing you have not been backing she has not been backing we have not been backing you have not been backing they have not been backing
Pluperfect
I had not backed you had not backed she had not backed we had not backed you had not backed they had not backed
Pluperfect continuous
I had not been backing you had not been backing she had not been backing we had not been backing you had not been backing they had not been backing
Future
I will not back you will not back she will not back we will not back you will not back they will not back
Future continuous
I will not be backing you will not be backing she will not be backing we will not be backing you will not be backing they will not be backing
Future perfect
I will not have backed you will not have backed she will not have backed we will not have backed you will not have backed they will not have backed
Future perfect continuous
I will not have been backing you will not have been backing she will not have been backing we will not have been backing you will not have been backing they will not have been backing
Conditional
Present
I would not back you would not back she would not back we would not back you would not back they would not back
Present continuous
I would not be backing you would not be backing she would not be backing we would not be backing you would not be backing they would not be backing
Past
I would not have backed you would not have backed she would not have backed we would not have backed you would not have backed they would not have backed
Past continuous
I would not have been backing you would not have been backing she would not have been backing we would not have been backing you would not have been backing they would not have been backing