Play word ナ行変格活用 ナ行変格活用 ナぎょうへんかくかつよう irregular conjugation of verbs ending in "nu" (in written Japanese)
Play word ラ行変格活用 ラ行変格活用 ラぎょうへんかくかつよう irregular conjugation of a limited number of verbs ending in "ru" (in written Japanese)
Play word ラ変 ラ変 ラへん irregular conjugation of a limited number of verbs ending in "ru" (in written Japanese)
Play word 応天門の変 応天門の変 おうてんもんのへん Ōtenmon incident (conspiracy in 866 CE that centered on the destruction of the main gate of the Imperial Palace)