AnalyzerSentence analysis2SpansSentence不変式1000 character limitAnalyzeSentence不ふ変へん式しきSpan Details不ふ変へんunchanging; constant; eternal; immutable; invariantna-adjective, noun式しきstyle; method; system; type; ceremony; rite; celebration; wedding ceremony; equation; formula; mathematical expression; enforcement regulations of the ritsuryō codesnoun, noun suffix