| masc. | singular | plural |
| nom. | langr harmr | langir harmar |
| acc. | langan harm | langa harma |
| gen. | langs harms | langra harma |
| dat. | lǫngum harmi | lǫngum hǫrmum |
| fem. | singular | plural |
| nom. | lǫng þǫrf | langar þarfar |
| acc. | langa þǫrf | langar þarfar |
| gen. | langrar þarfar | langra þarfa |
| dat. | langri þǫrf | lǫngum þǫrfum |
| neut. | singular | plural |
| nom. | langt vatn | lǫng vǫtn |
| acc. | langt vatn | lǫng vǫtn |
| gen. | langs vatns | langra vatna |
| dat. | lǫngu vatni | lǫngum vǫtnum |