Classes: aspirated voiceless velar stop
Implicit classes: obstruent consonant C
Features: +SG -voice dorsal -sonorant -continuant
Related rules
Origin
grk-thorn-clusters: {tḱ|tk} > kt, dʰgʰ > χθ, dʰgʷʰ > φθgrk-aspirate-devoicing: bʰ > φ, dʰ > θ, ǵʰ > χ, gʰ > χ, gʷʰ > χʷ