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Indo-European
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Old English
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Rules
> oe-front-mutate-vowel
{
e
a
|
ē
a
|
i
o
|
ī
o
|
u
|
ū
|
o
|
ō
|
a
|
ā
|
æ
}
>
{
i
e
|
ī
e
|
i
e
|
ī
e
|
y
|
ȳ
|
e
|
ē
|
æ
|
ǣ
|
e
}
Related rules
oe-i-umlaut
Referencing rules
oe-front-mutation