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