List the sound shifts the proto-Finnic language went through up to the modern Finnish language
The proto-Finnic language underwent several sound shifts over time, which contributed to the development of the modern Finnish language. 

Some of the most significant sound shifts include:

1. The loss of the Finno-Ugric initial consonant cluster *pl- and *pr-.
2. The development of vowel harmony through the assimilation of vowels based on the back or front position of the first vowel in the word.
3. The development of the Finnish consonant gradation system which involves the alternation of consonants between weak and strong forms.
4. The disappearance of certain vowel combinations such as diphthongs in words.
5. The palatalization of certain consonants before front vowels.

These sound shifts are essential to understanding the development of the Finnish language over time.
Additionally, other sound shifts that have influenced the development of the modern Finnish language include:

The development of the vowel length system, which distinguishes between short and long vowels.
The loss of the Finno-Ugric initial consonant cluster *kn- and the development of initial clusters *tl-, *ht-, and *hk-.
The simplification of the Finnish grammatical cases, which resulted in a reduction from the original 16 cases to the current 15.
The assimilation of loanwords from other languages, such as Swedish and Russian, which have also contributed to changes in Finnish pronunciation and vocabulary.

Overall, the sound shifts that have occurred in the development of the Finnish language reflect the complex history and cultural influences on the language. Understanding these sound shifts can provide insight into the unique features of Finnish phonetics and morphology.
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