Proto-Kam-Sui tones:

• 1 = Tone *A, voiceless
• 2 = Tone *A, voiced
• 3 = Tone *C, voiceless
• 4 = Tone *C, voiced
• 5 = Tone *B, voiceless
• 6 = Tone *B, voiced
• 7 = Tone *D, voiceless
• 8 = Tone *D, voiced

Thurgood's reconstructions are still preliminary and are derived from limited data sets.

Andrew Hsiu