| Simple present |
don't develop rust |
don't develop rust |
doesn't develop rust |
don't develop rust |
don't develop rust |
don't develop rust |
| Present continuous |
am not developing rust |
are not developing rust |
is not developing rust |
are not developing rust |
are not developing rust |
are not developing rust |
| Simple past |
didn't develop rust |
didn't develop rust |
didn't develop rust |
didn't develop rust |
didn't develop rust |
didn't develop rust |
| Simple past |
was not developing rust |
were not developing rust |
was not developing rust |
were not developing rust |
were not developing rust |
were not developing rust |
| Simple future |
won't develop rust |
won't develop rust |
won't develop rust |
won't develop rust |
won't develop rust |
won't develop rust |
| Future continuous |
will not be developing rust |
will not be developing rust |
will not be developing rust |
will not be developing rust |
will not be developing rust |
will not be developing rust |
| Present perfect |
have not developed rust |
have not developed rust |
has not developed rust |
have not developed rust |
have not developed rust |
have not developed rust |
| Present perfect continuous |
have not been developing rust |
have not been developing rust |
has not been developing rust |
have not been developing rust |
have not been developing rust |
have not been developing rust |
| Present continuous |
am not developing rust |
are not developing rust |
is not developing rust |
are not developing rust |
are not developing rust |
are not developing rust |
| Past perfect |
had not developed rust |
had not developed rust |
had not developed rust |
had not developed rust |
had not developed rust |
had not developed rust |
| Past perfect continuous |
had not been developing rust |
had not been developing rust |
had not been developing rust |
had not been developing rust |
had not been developing rust |
had not been developing rust |
| Future perfect |
will have not developed rust |
will have not developed rust |
will have not developed rust |
will have not developed rust |
will have not developed rust |
will have not developed rust |
| Future perfect continuous |
will have not been developing rust |
will have not been developing rust |
will have not been developing rust |
will have not been developing rust |
will have not been developing rust |
will have not been developing rust |