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Old English is (cognate)
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Bavarian ais (inherited)
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Cimbrian ais (inherited)
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Central Franconian Eis (inherited)
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Central Franconian Ies (inherited)
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Alemannic German isch (inherited)
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Alemannic German Iis (inherited)
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Alemannic German éisch (inherited)
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Hunsrik Eis (inherited)
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Luxembourgish Äis (inherited)
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Mòcheno ais (inherited)
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Old Norse íss (cognate)
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Pennsylvania German Eis (inherited)
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Vilamovian ajs (inherited)
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Yiddish אײַז (inherited)