The imperfectum
Add the dental suffix to the stem; 't kofschip chooses -te vs -de.
| Stem ends in | Singular | Plural |
|---|---|---|
| t,k,f,s,ch,p ('t kofschip) | -te | -ten |
| any other sound | -de | -den |
Strong verbs form the past by an internal vowel change.
The imperfectum suits writing and ongoing past states.