| Simple present |
don't keep the books |
don't keep the books |
doesn't keep the books |
don't keep the books |
don't keep the books |
don't keep the books |
| Present continuous |
am not keeping the books |
are not keeping the books |
is not keeping the books |
are not keeping the books |
are not keeping the books |
are not keeping the books |
| Simple past |
didn't keep the books |
didn't keep the books |
didn't keep the books |
didn't keep the books |
didn't keep the books |
didn't keep the books |
| Past continuous |
was not keeping the books |
were not keeping the books |
was not keeping the books |
were not keeping the books |
were not keeping the books |
were not keeping the books |
| Simple future |
won't keep the books |
won't keep the books |
won't keep the books |
won't keep the books |
won't keep the books |
won't keep the books |
| Future continuous |
will not be keeping the books |
will not be keeping the books |
will not be keeping the books |
will not be keeping the books |
will not be keeping the books |
will not be keeping the books |
| Present perfect |
have not kept the books |
have not kept the books |
has not kept the books |
have not kept the books |
have not kept the books |
have not kept the books |
| Present perfect continuous |
have not been keeping the books |
have not been keeping the books |
has not been keeping the books |
have not been keeping the books |
have not been keeping the books |
have not been keeping the books |
| Past perfect |
had not kept the books |
had not kept the books |
had not kept the books |
had not kept the books |
had not kept the books |
had not kept the books |
| Past perfect continuous |
had not been keeping the books |
had not been keeping the books |
had not been keeping the books |
had not been keeping the books |
had not been keeping the books |
had not been keeping the books |
| Future perfect |
will not have kept the books |
will not have kept the books |
will not have kept the books |
will not have kept the books |
will not have kept the books |
will not have kept the books |
| Future perfect continuous |
will not have been keeping the books |
will not have been keeping the books |
will not have been keeping the books |
will not have been keeping the books |
will not have been keeping the books |
will not have been keeping the books |