原級 げんきゅう留置 りゅうちではありませんでした
genkyūryūchidewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 原級留置

1. Was not held in original detention.; Was not kept in the original class/grade.

Past/Perfective
Negative
Polite
Formal Register