don't I alert? don't you alert? doesn't he alert? don't we alert? don't you alert? don't they alert?
Present continuous
am I not alerting? aren't you alerting? isn't he alerting? aren't we alerting? aren't you alerting? aren't they alerting?
Preterite
didn't I alert? didn't you alert? didn't he alert? didn't we alert? didn't you alert? didn't they alert?
Preterite continuous
wasn't I alerting? weren't you alerting? wasn't he alerting? weren't we alerting? weren't you alerting? weren't they alerting?
Present perfect
haven't I alerted? haven't you alerted? hasn't he alerted? haven't we alerted? haven't you alerted? haven't they alerted?
Present perfect continuous
haven't I been alerting? haven't you been alerting? hasn't he been alerting? haven't we been alerting? haven't you been alerting? haven't they been alerting?
Pluperfect
hadn't I alerted? hadn't you alerted? hadn't he alerted? hadn't we alerted? hadn't you alerted? hadn't they alerted?
Pluperfect continuous
hadn't I been alerting? hadn't you been alerting? hadn't he been alerting? hadn't we been alerting? hadn't you been alerting? hadn't they been alerting?
Future
won't I alert? won't you alert? won't he alert? won't we alert? won't you alert? won't they alert?
Future continuous
won't I be alerting? won't you be alerting? won't he be alerting? won't we be alerting? won't you be alerting? won't they be alerting?
Future perfect
won't I have alerted? won't you have alerted? won't he have alerted? won't we have alerted? won't you have alerted? won't they have alerted?
Future perfect continuous
won't I have been alerting? won't you have been alerting? won't he have been alerting? won't we have been alerting? won't you have been alerting? won't they have been alerting?
Conditional
Present
wouldn't I alert? wouldn't you alert? wouldn't he alert? wouldn't we alert? wouldn't you alert? wouldn't they alert?
Present continuous
wouldn't I be alerting? wouldn't you be alerting? wouldn't he be alerting? wouldn't we be alerting? wouldn't you be alerting? wouldn't they be alerting?
Past
wouldn't I have alerted? wouldn't you have alerted? wouldn't he have alerted? wouldn't we have alerted? wouldn't you have alerted? wouldn't they have alerted?
Past continuous
wouldn't I have been alerting? wouldn't you have been alerting? wouldn't he have been alerting? wouldn't we have been alerting? wouldn't you have been alerting? wouldn't they have been alerting?