このこの(kono) (n) this教訓教訓(kyoukun) (n,vs) lesson/precept/moral instructionをを(wo) (prt) indicates direct object of action/indicates subject of causative expression/indicates an area traversed/indicates time over which action takes place/indicates point of departure or separation of action/indicates object of desire, like, hate,忘れno dictionary result, likely a conjigated verbno dictionary result, likely a conjigated verbるる(ru) (n) exileなな(na) (prt) connects adj to noun/indicates emotion or emphasis/command/prohibition。。(。) Japanese period "."
