Graphemes: b
Classes: bilabial voiced stop consonant
Implicit classes: obstruent
Features labial +voice -sonorant -continuant
Related rules
Development: Proto-West Germanic
pwgmc-gemination-by-j: β > bb / _j, C > CC / _jDevelopment: Old English
pwgmc-gemination-by-j: β > bb / _j, C > CC / _j