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