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regional | language codes (3 letters)
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community | music
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Spirit Of St Louis Airport, St Louis, Missouri Usa
regional | airport codes
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computing | security
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computing | general
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business | london stock exchange
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Sistema Único De Saúde (brazil: Single Health System)
governmental
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regional
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Subject Under Specification
miscellaneous | unclassified
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community | law & legal
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Single Unix Specification
governmental | military
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medical | british medicine
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miscellaneous | unclassified
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Society Of University Surgeons
medical | british medicine
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medical | british medicine
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computing | general
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Science Undergraduate Society
academic & science | universities
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governmental | military
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miscellaneous | unclassified
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governmental | military
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governmental | us government
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medical | physiology
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community | law & legal
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Southern University System
academic & science | universities
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computing | software
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computing | networking
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Stochastic Universal Sampling
academic & science | mathematics
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community | religion
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academic & science | chemistry
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Supplier Utilization Standards
miscellaneous | unclassified
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Saybolt Universal Seconds
business | companies & firms
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governmental | transportation
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miscellaneous | funnies
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business | nyse symbols
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Secondary Uses Service (programme)
medical | british medicine
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computing | networking