the different patterns that occur with different following vowels:

The second type of umlaut, called "diphthong simplification" or "monophthongization", is similar to its Northern Sami counterpart, but works differently. The diphthongs and become and respectively, if:
* The vowel in the next syllable is short (thus including also ), and
* The following consonant is quantity 1 or 2.The diphthongs and are unaffected. The reverse process also occurs, turning the long vowels back into diphthongs if the consonant becomes quantity