This is interesting. In Dutch, like English, this sounds unnecessarily repetitive, but in Arabic we can also say "Anzilu ila ttaht". 'Anzilu' means 'I go down' and 'ila at-taht' means 'to the lower spot, to down*'. So you also say it twice. And you can only say 'anzil', 'I go down'. Arabic is really helping me a lot to understand Indonesian, not just vocabulary, but also the formation of sentences.