AnalyzerSentence analysis5SpansSentence手紙をやり取りする相手1000 character limitAnalyzeSentence手て紙がみをやり取とりする相あい手てSpan Details手て紙がみletter; notenounをobject markergrammarやり取とりexchange; give and take; back-and-forthnoun, suru verbするlight/support verb with a noun or noun-like phrasegrammar相あい手てcompanion; partner; company; other party; addressee; counterparty; opponent; rivalnoun