Here's what rhymes with oraganisation.
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examination circulation classification imagination integration legislation participation preparation presentation regulation declaration expectation exploration modification obligation orientation preservation alienation arbitration celebration characterization computation condemnation congregation consolidation consultation contamination contemplation deformation degeneration delegation depreciation designation destination elimination emancipation frustration illumination implication inclination manipulation penetration proclamation proliferation propagation recreation regeneration registration resignation segregation simulation ventilation approbation calibration certification complication dedication deliberation deprivation dissemination evacuation fabrication generalization gratification humiliation importation incarnation incubation infiltration liberalization mobilization notification ordination polarization privatization pronunciation retardation sophistication unification 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