Danser notes that the first two originate from the Minangkabau language, whereas the latter is an orthographical error for tahoel-tahoel, which is the common Batak name for Nepenthes.
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When he was 15, he was inspired to translate Saijah and Adinda (a poem), a part of Max Havelaar by Multatuli, from Dutch to Batak which was his mother tongue even though his Dutch was limited for this kind of literature.