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Sentence analysis
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Sentence
Span Details
定額制
flat-rate system; fixed-rate billingnoun
の
possession, attribution, nominalizer, or nominal linkergrammar
プラン
plan; scheme; payment plan; package; dealnoun
に
direction, time, indirect object, or target markergrammar
申し込ん
apply for; make an application; propose (marriage); offer; challenge; lodge (objections); request (interview); subscribe; book; reserve-> 申し込むgodan verb
だ。
past tense or completed action-> たgrammar