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arbitration aspiration decoration delegation destination dissertation domination estimation imitation installation irrigation irritation medication meditation navigation nomination notation oxidation penetration plantation proclamation reservation saturation temptation termination utilization vacation valuation vegetation ventilation vibration accusation affiliation aggregation annihilation aviation calibration causation cessation consolation dedication derivation dilatation elaboration emigration fascination graduation insulation maturation moderation mutation ordination probation ratification reformation replication retaliation validation vocation alternation amputation bifurcation cancellation castration citation connotation constellation demarcation divination duplication emulation escalation fertilization germination gestation hydration intimation intonation iteration masturbation ovulation perforation recitation regurgitation renovation reparation revocation sanitation stagnation 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