Classes: voiced alveolar trill liquid consonant
Implicit classes: C
Features: +voice coronal sonorant
Related rules
Development: Sindarin
s-initial-s-unvoicing: sr > r̥ / #_, sl > l̥ / #_, sw > w̥ / #_Development: Quenya
q-initial-s-unvoicing: sr > r̥ / #_, sl > l̥ / #_, sw > w̥ / #_q-z-r: z > r