became soft spirants in intervocalic position and before liquids:

Voiceless spirants

* Geminated voiceless plosives transformed into spirants:

*Voiceless stops become spirants after liquids:

Nasal assimilation

* Voiced stops were assimilated to a preceding nasal:

* Brittonic retains original nasals before and :

Classification

The family tree of the Brittonic languages is as follows: