| Sg | Pl | |
| 1st | bý (rule) | búm (rule) |
| 2nd | býr (rule) | búið (rule) |
| 3rd | býr (rule) | búa (rule) |
| Sg | Pl | |
| 1st | bjó (rule) | búm (rule) |
| 2nd | bútt (rule) | búð (rule) |
| 3rd | bjó (rule) | bú (rule) |
| Sg | Pl | |
| 1st | búumk (rule) | búumk (rule) |
| 2nd | býsk (rule) | búizk (rule) |
| 3rd | býsk (rule) | búask (rule) |
| Sg | Pl | |
| 1st | ? (rule) | búmsk (rule) |
| 2nd | ? (rule) | búzk (rule) |
| 3rd | bjósk (rule) | búsk (rule) |
| Sg | Pl | |
| 1 | búa (rule) | búim (rule) |
| 2 | búir (rule) | búið (rule) |
| 3 | búi (rule) | búi (rule) |
| Sg | Pl | |
| 1 | býa (rule) | býim (rule) |
| 2 | býir (rule) | býið (rule) |
| 3 | býi (rule) | býi (rule) |
| Form | |
| Participle | búandi (rule) |
| Past participle | búinn (rule) |
| Middle infinitive | búask (rule) |
| Sg | |
| 2nd | bú (rule) |