Zhuang bi

← Ahom 𑜆𑜣 (cognate)

← Lü ᦔᦲ (cognate)

← Lao ປີ (cognate)

← Northern Thai ᨸᩦ (cognate)

← Bouyei bil (cognate)

← Phake ပီ (cognate)

← Shan ပီ (cognate)

← Proto-Tai *piːᴬ (inherited)

← Tai Nüa ᥙᥤ (cognate)

← Thai ปี (cognate)

→ Lü ᦔᦲ (cognate)

→ Lao ປີ (cognate)

→ Northern Thai ᨸᩦ (cognate)

→ Bouyei bil (cognate)

→ Shan ပီ (cognate)

→ Tai Nüa ᥙᥤ (cognate)

→ Thai ปี (cognate)