←
Proto-Bahnaric *kal (cognate)
←
Proto-Katuic *kəl (cognate)
←
Proto-Mon-Khmer *kuəl (mention)
←
Proto-Vietic *gəl (inherited)
←
Proto-Vietic *kəl (mention)
←
Vietnamese cân (cognate)
←
Vietnamese cấy (mention)
→
Vietnamese cây số (compound)
→
Vietnamese cấy (mention)