| 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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| 10 Austronesian | 10.2.6.1 Proto-North Sarawak to Kiput | ai au → ɛː ɔː / _…#
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| 17 Indo-European | 17.5.2 Proto-Celtic to Middle Welsh | aː → ɔː
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| 17.7.1 Common Germanic to Gothic | oːw æːj → ɔː ɛː / _V
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| 17.7.2.1.2 Old English to Kentish Middle English | {ɑːw,ɑːɣ,oːw} → ɔːw
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| oɣ → ɔːw / _V
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| ɑː y(ː) → ɔː e(ː)
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| 17.7.2.1.3 Old English to Midlands Middle English | {ɑːw,ɑːɣ,oːw} → ɔːw
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| oɣ → ɔːw / _V
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| ɑː y(ː) → ɔː i(ː)
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| 17.7.2.1.4 Midlands Middle English to Early Modern English | a ɑ {ɛ,ɪ,ɤ} → ɑː ɔː ɜː / _ɹ{C,#}
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| ɑʊ → ɔː / else
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| 17.7.2.1.5 Early Modern English to American English | ɒ → ɒː → ɔː / _F[-voiced]
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| 17.7.2.1.6 Early Modern English to Australian English | ɜːɹ ɑːɹ ɔːɹ eːɹ oːɹ iːɹ uːɹ → ɜː ɑː ɔː ɛə ɔə ɪə ʊə / syllable-finally
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| ɒ → ɒː → ɔː / _F[-voiced]
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| ɔə → ɔː
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| ɛə ʊə → ɛː ɔː (ongoing)
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| ɔ → ɔː / “in ‘gone’ and some derivatives”
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| 17.7.2.1.7 Early Modern English to British English | ɜːɹ ɑːɹ ɔːɹ eːɹ oːɹ iːɹ uːɹ → ɜː ɑː ɔː ɛə ɔə ɪə ʊə / syllable-finally
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| ɒ → ɒː → ɔː / _F[-voiced]
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| 17.7.2.1.8 Old English to Northern Middle English | {ɑːw,ɑːɣ,oːw} → ɔːw
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| oɣ → ɔːw / _V
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| 17.7.2.1.9 Early Northern Middle English to Scots | — 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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| 17.7.2.1.12 Old English to Southern Middle English | {ɑːw,ɑːɣ,oːw} → ɔːw
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| oɣ → ɔːw / _V
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| ɑː → ɔː
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| 17.7.2.2.4 Belgian and Netherlandish Dutch Monophthongization | ɛi œy ɔu → ɛː œː ɔː
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| 17.11.1 Proto-Slavic to Polish | ъl → ɔ(ː)ɫ / P_
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| ьl → ɔ(ː)ɫ
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| a ɛ i ɔ u ɨ ã → aː ɛː iː ɔː uː ɨː ãː / _{C/U}[+voiced][lost yer] (i.e., a voiced consonant or a cluster with one)
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| ɔ → ɔː / _{r,l} (sporadic, perhaps analogical)
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| 37 Siouan-Iroquoian | 37.1.2.6 Proto-Northern Iroquoian to Tuscarora | a(ː) o(ː) → ɔ(ː) u(ː) / ! “when both short and unstressed”
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| 37.1.2.6.2 Tuscarora to Eastern Tuscarora | ə̃(ː) a(ː) o(ː) → ɨ̃(ː) ɔ(ː) u(ː) (“in all positions”)
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| 38 Tai-Kadai | 38.1.1.4 Proto-Tai to North Tai | uo → ɔː
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| uɨ̯ ua̯ → ɨə uɔ̯ → ɨː ɔː
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| 38.1.1.5 Proto-Tai to Southwest Tai | o → ɔː / _i
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| 38.1.1.5.4 Southwest Tai to Siamese | {u̯o,u̯ɨ} u̯ɔ → o ɔː
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| {ɨɔ,ɨ̯ɔ} → ɔː
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| {u̯əi,ɔi} → ɔːi
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| 42 Uralic | 42.1.2 Proto-Finnic to Livonian | ɑː au → ɔː ɔu (though sometimes ɑː develops, apparently at least partially due to metathesis?)
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| 46 Vowel Shifts | 46.3 Belgian and Netherlandish Dutch Monophthongization | ɛi œy ɔu → ɛː œː ɔː
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| 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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