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