Velar stop consonants have palatal allophones before front vowels. The sibilants exist as allophones of and the fricative as an allophone of . Sanskrit and are syllabic consonants, allophones of consonantal and . This differs from Russian where palatalized consonants are not allophones but phonemes on their own. The phoneme /i/ has three distinct allophones. Many of these phonemes have quite different allophones in onset and coda. Many dialects have multiple emphatic allophones of each vowel, depending on the particular nearby consonants. Proto-Germanic had two allophones each&colon; stops and fricatives . First, interchanged allophones of the same phoneme can result in unrecognizable words. Phonemes are written inside slashes () and allophones inside brackets (). Tamil is a classical language phonetically characterized by allophones, approximants, nasals and glottalised sounds. The phoneme has a number of variants and allophones. The fricative sounds , , and occur as allophones. Korean consonants have three principal positional allophones&colon; initial, medial (voiced), and final (checked). In Edo, the nasalized allophones of the approximants and are nasal occlusives, and .