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Sentence analysis
6Spans
Sentence
Span Details
親友
close friend; best friendnoun
に
direction, time, indirect object, or target markergrammar
秘密
secret; confidential; private; mystery; secret (to success, etc.); key; esoteric teachingsnoun, na-adjective
を
object markergrammar
打ち明け
confide; reveal; open up-> 打ち明けるichidan verb
た。
past tense or completed actiongrammar