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Ancient Greek φθίσις (cognate)
←
Ancient Greek κτίσις (cognate)
←
Proto-Indo-Iranian *gžʰítiš (inherited)
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Proto-Indo-Iranian *ćšítiš (inherited)
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Proto-Indo-Aryan *ṭṣítiṣ (inherited)
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Proto-Indo-European (inherited)
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Proto-Indo-European *tḱey- (mention)
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Ancient Greek φθίσις (cognate)