| Sg | Pl | |
| 1st | ? (rule) | ? (rule) |
| 2nd | ?r (rule) | ? (rule) |
| 3rd | skal (rule) | skulu (rule) |
| Sg | Pl | |
| 1st | ?a (rule) | ?um (rule) |
| 2nd | ?ir (rule) | ?uð (rule) |
| 3rd | ?i (rule) | skyldu (rule) |
| Sg | Pl | |
| 1st | ? (rule) | ? (rule) |
| 2nd | ?sk (rule) | ? (rule) |
| 3rd | ? (rule) | skulusk (rule) |
| Sg | Pl | |
| 1st | ?umk (rule) | ?umsk (rule) |
| 2nd | ?isk (rule) | ?uzk (rule) |
| 3rd | ?isk (rule) | skyldusk (rule) |
| Sg | Pl | |
| 1 | skulu (rule) | ? (rule) |
| 2 | ? (rule) | ? (rule) |
| 3 | ? (rule) | skyli (rule) |
| Sg | Pl | |
| 1 | ?a (rule) | ?im (rule) |
| 2 | ?ir (rule) | ?ið (rule) |
| 3 | ?i (rule) | ?i (rule) |
| Form | |
| Participle | skulundi (rule) |
| Past participle | ?r (rule) |
| Middle infinitive | skulusk (rule) |
| Sg | |
| 2nd | ? (rule) |