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