Etymograph
>
Indo-European
>
Old Norse
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Rules
> on-i-umlaut-change
{
j
a
|
a
|
j
á
|
á
|
o
|
ó
|
j
u
|
u
|
j
ú
|
ú
|
ö
}
>
{
e
|
e
|
e
|
æ
|
ø
|
œ
|
y
|
y
|
ý
|
ý
|
ø
}
Referencing rules
on-i-umlaut