8 Altaic | 8.1.1 Early Middle Japanese to Modern Japanese | au iu uu eu ou → ɔː juː uː joː oː
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17 Indo-European | 17.5.1 Proto-Indo-European to Old Irish | {au,eu,ou} → oː
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17.5.2 Proto-Celtic to Middle Welsh | {au,eu,ou} → ∅
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17.7 Proto-Indo-European to Common Germanic | eu ou → iu au
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17.7.2.1.9 Early Northern Middle English to Scots | ol al → ou ɑː → ʌu {ɑ,ɔ}
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— ai oi ui ei au ou iu ɛ(o)u → eː oe əi iː {ɑː,ɔː} ʌu ju j(ʌ)u
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17.7.2.2 West Germanic to Old Low Franconian | ei ou → eː oː (except in southeastern dialects; *ei as a result of the umlaut of *ai was not affected)
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17.7.2.3 Middle High German to Standard German | ou øy ei → au oy ai
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17.7.3 Common Germanic to Proto-Norse | o(u) {ɔ,ɑ,au,ai,æ} {ja,jE,æ(i),e(i),y} → u a i
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17.11 Proto-Indo-European to Proto-Slavic | {a(ː)u,o(ː)u} e(ː)u → u ju
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17.12.1.1 Proto-Indo-European to Latin | {ew,ow} → ou → uː
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ei oi ou → iː eː uː / %(C)(C)_ when unstressed
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17.12.1.1.3 Latin to French | ó → ou → ɛu / in U[+open]
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ou ɛu u uɛi → u œ y yi
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38 Tai-Kadai | 38.1.1.4.2 North Tai to Po-Ai | {ou,oɨ} → oː
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46 Vowel Shifts | 46.5 Old English-to-Scots Vowel Shifts | ai oi ui ei au ou iu ɛ(o)u → eː oe əi iː {ɑː,ɔː} ʌu ju j(ʌ)u
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46.10 Late Proto-Finnic to Savonian Vowel Shift | ɑu ou → ɑː oː
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