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In page Lincos language:
"A second book was planned but never written that would have added four more sections to the dictionary: "Matter"; "Earth"; "Life"; and "Behavior 2". Other researchers have since extended the language somewhat on their own. One example is CosmicOS. Another is a second-generation Lingua Cosmica[3] developed by the Dutch-Swedish astronomer and mathematician Alexander Ollongren[4] of Leiden University, using constructive logic.[citation needed]
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