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