don't I stumble? don't you stumble? doesn't he stumble? don't we stumble? don't you stumble? don't they stumble?
Presente continuo
am I not stumbling? aren't you stumbling? isn't he stumbling? aren't we stumbling? aren't you stumbling? aren't they stumbling?
Preterito
didn't I stumble? didn't you stumble? didn't he stumble? didn't we stumble? didn't you stumble? didn't they stumble?
Preterite continua
wasn't I stumbling? weren't you stumbling? wasn't he stumbling? weren't we stumbling? weren't you stumbling? weren't they stumbling?
Presente perfetto
haven't I stumbled? haven't you stumbled? hasn't he stumbled? haven't we stumbled? haven't you stumbled? haven't they stumbled?
Presente perfetto continuo
haven't I been stumbling? haven't you been stumbling? hasn't he been stumbling? haven't we been stumbling? haven't you been stumbling? haven't they been stumbling?
Piuccheperfetto
hadn't I stumbled? hadn't you stumbled? hadn't he stumbled? hadn't we stumbled? hadn't you stumbled? hadn't they stumbled?
Piuccheperfetto continuo
hadn't I been stumbling? hadn't you been stumbling? hadn't he been stumbling? hadn't we been stumbling? hadn't you been stumbling? hadn't they been stumbling?
Futuro semplice
won't I stumble? won't you stumble? won't he stumble? won't we stumble? won't you stumble? won't they stumble?
Futuro continuo
won't I be stumbling? won't you be stumbling? won't he be stumbling? won't we be stumbling? won't you be stumbling? won't they be stumbling?
Futuro anteriore
won't I have stumbled? won't you have stumbled? won't he have stumbled? won't we have stumbled? won't you have stumbled? won't they have stumbled?
Futuro anteriore contínuo
won't I have been stumbling? won't you have been stumbling? won't he have been stumbling? won't we have been stumbling? won't you have been stumbling? won't they have been stumbling?
Condizionale
Presente
wouldn't I stumble? wouldn't you stumble? wouldn't he stumble? wouldn't we stumble? wouldn't you stumble? wouldn't they stumble?
Presente continuo
wouldn't I be stumbling? wouldn't you be stumbling? wouldn't he be stumbling? wouldn't we be stumbling? wouldn't you be stumbling? wouldn't they be stumbling?
Passato
wouldn't I have stumbled? wouldn't you have stumbled? wouldn't he have stumbled? wouldn't we have stumbled? wouldn't you have stumbled? wouldn't they have stumbled?
Passato continuo
wouldn't I have been stumbling? wouldn't you have been stumbling? wouldn't he have been stumbling? wouldn't we have been stumbling? wouldn't you have been stumbling? wouldn't they have been stumbling?