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