Warning, this verb may not exist. Conjugation is given as example.
Indicative
Present
I fail fail you fail fail he fail fails we fail fail you fail fail they fail fail
Present continuous
I am fail failing you are fail failing he is fail failing we are fail failing you are fail failing they are fail failing
Preterite
I fail failed you fail failed he fail failed we fail failed you fail failed they fail failed
Preterite continuous
I was fail failing you were fail failing he was fail failing we were fail failing you were fail failing they were fail failing
Present perfect
I have fail failed you have fail failed he has fail failed we have fail failed you have fail failed they have fail failed
Present perfect continuous
I have been fail failing you have been fail failing he has been fail failing we have been fail failing you have been fail failing they have been fail failing
Pluperfect
I had fail failed you had fail failed he had fail failed we had fail failed you had fail failed they had fail failed
Pluperfect continuous
I had been fail failing you had been fail failing he had been fail failing we had been fail failing you had been fail failing they had been fail failing
Future
I will fail fail you will fail fail he will fail fail we will fail fail you will fail fail they will fail fail
Future continuous
I will be fail failing you will be fail failing he will be fail failing we will be fail failing you will be fail failing they will be fail failing
Future perfect
I will have fail failed you will have fail failed he will have fail failed we will have fail failed you will have fail failed they will have fail failed
Future perfect continuous
I will have been fail failing you will have been fail failing he will have been fail failing we will have been fail failing you will have been fail failing they will have been fail failing
Conditional
Present
I would fail fail you would fail fail he would fail fail we would fail fail you would fail fail they would fail fail
Present continuous
I would be fail failing you would be fail failing he would be fail failing we would be fail failing you would be fail failing they would be fail failing
Past
I would have fail failed you would have fail failed he would have fail failed we would have fail failed you would have fail failed they would have fail failed
Past continuous
I would have been fail failing you would have been fail failing he would have been fail failing we would have been fail failing you would have been fail failing they would have been fail failing