I prevent you prevent he prevents we prevent you prevent they prevent
Present continuous
I am preventing you are preventing he is preventing we are preventing you are preventing they are preventing
Preterite
I prevented you prevented he prevented we prevented you prevented they prevented
Preterite continuous
I was preventing you were preventing he was preventing we were preventing you were preventing they were preventing
Present perfect
I have prevented you have prevented he has prevented we have prevented you have prevented they have prevented
Present perfect continuous
I have been preventing you have been preventing he has been preventing we have been preventing you have been preventing they have been preventing
Pluperfect
I had prevented you had prevented he had prevented we had prevented you had prevented they had prevented
Pluperfect continuous
I had been preventing you had been preventing he had been preventing we had been preventing you had been preventing they had been preventing
Future
I will prevent you will prevent he will prevent we will prevent you will prevent they will prevent
Future continuous
I will be preventing you will be preventing he will be preventing we will be preventing you will be preventing they will be preventing
Future perfect
I will have prevented you will have prevented he will have prevented we will have prevented you will have prevented they will have prevented
Future perfect continuous
I will have been preventing you will have been preventing he will have been preventing we will have been preventing you will have been preventing they will have been preventing
Conditional
Present
I would prevent you would prevent he would prevent we would prevent you would prevent they would prevent
Present continuous
I would be preventing you would be preventing he would be preventing we would be preventing you would be preventing they would be preventing
Past
I would have prevented you would have prevented he would have prevented we would have prevented you would have prevented they would have prevented
Past continuous
I would have been preventing you would have been preventing he would have been preventing we would have been preventing you would have been preventing they would have been preventing