described above. The original strong grade was preserved in verbs like hais-ta 'to stink' since gradation did not take place when a consonant followed /s/. The situation appears differently in the many verbs ending in -ata/ätä. These verbs seem to have preserved the strong grade in the infinitive ending, going counter to the rules of gradation. However, historically it is in fact a weak grade: the stem of the verb itself ended in *-at/ät-, and this is still visible in the 3rd person imperative ending -atkoon/ätköön. Thus, when combined with the infinitive ending, the verb ended in *-attak/ättäk (similar to the origin of the -ton/tön suffix described above). The -k then weakened the consonant from a geminate *-tt- to a single *-t-, and later loss of -k resulted in the final form -ata/ätä. However, even though this is now a single consonant, it was originally a geminate and therefore triggers the weak grade on the syllable before it. So whereas the infinitive may be for example hypätä 'to jump', its original stem was *hyppät-, as can be seen in the first-person singular form hyppään 'I jump', from earlier *hyppäðen with loss of *-ð-. An opposite effect was caused by the loss of *h and *ð between unstressed vowels. Loss of h affected nouns and adjectives ending in *-s or *-h, such as kuningas 'king'. In the nominative, this -s appeared as usual, and as the preceding syllable was closed, the weak grade ng appeared. But when a case ending such as the genitive was added, the result was originally *kuninkasen, which was then weakened to *kuninkahen, and the loss of -h- then resulted in the modern form kuninkaan. The intermediate steps are seen in mies 'man'. Here, following a stressed syllable, the -h- was not lost, so that its genitive is miehen. Similar changes affected the illative ending, which was -hVn where V was the same as the vowel preceding the ending. The h is preserved after stressed syllables, as in maahan 'into the land' (from maa), but lost otherwise as in kotiin 'into the home' (from earlier *kotihin, from koti). This explains why kotiin retains a strong grade even though a closed syllable follows it. The Pohjanmaa dialect of Finnish retains the -h-, however. Words that now end in -e are in fact very similar to those ending in -s. These originally ended with -k or -h so that