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