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A fiend of mine wants to name a plant San-san, but written correctly.

closed as off-topic by virmaior, macraf, l'électeur, broccoli forest, Dono Sep 8 '17 at 4:30

This question appears to be off-topic. The users who voted to close gave this specific reason:

  • "Questions asking for translations, transcriptions or proofreading are off-topic unless prior research effort is clearly indicated; we're here to help you learn, not to provide a bulk translation service nor to proofread your translations or transcriptions. See: We don't do translations." – virmaior, l'électeur, Dono
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2

Given as how a Japanese person is unlikely to be named "San", the name itself should be written in Katakana. The "-san" honorific is always written in Hiragana. Therefore:

サンさん
San-san

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