Tamil script
The Tamil script differs from other Brahmi-derived scripts in a number of ways. Unlike every other Brahmic script, it does not regularly represent voiced or aspirated stop consonants as these are not phonemes of the Tamil language even though voiced and fricative allophones of stops do appear in spoken Tamil. Thus the character "k", for example, represents but can also be pronounced [] or [] based on the rules of Tamil grammar. A separate set of characters appears for these sounds when the Tamil script is used to write Sanskrit or other languages.