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Sentence

洞どう窟くつの奥おく深ふかくに進すすんだ。

Span Details

洞どう窟くつ

cave; cavern; grotto

possession, attribution, nominalizer, or nominal linker

奥おく深ふかく

deep (of a cave, etc.); innermost; interior

-> 奥深いi-adjective

direction, time, indirect object, or target marker

advance; go forward; move ahead

-> 進むgodan verb

past tense or completed action