んじゃ => If ... then... N4
Condition (hypothetical condition)
ちゃんと => Clear, neat, dignified, complete N3
Result status
じゃありませんでした => was not, were not N5
Emphasize negative meaning
ちゃんとする => Serious, tidy, complete N3
Result status
んじゃない => can not, impossible to... N4
Ban
じゃありません => not to be N5
Emphasize negative meaning
んじゃなかったか => shouldn't have... N4
Regret
んじゃないか => right? isn't it? let's~; confirmation N4
Confirm
に[反「はん」]して/に[反「はん」]し/に[反「はん」]する/に[反「はん」]した => In contrast to A N2
Contrast,Surprise
んじゃない => confirmation of information; express surprise towards listener N4
Speculation
ませんでした => Did not... N5
Negation in the past
そうじゃありません => Not like that, Not that way N5
Confirm