West Frisian sân

← Proto-Germanic *sebun (inherited)

← Proto-Germanic (mention)

← Proto-Germanic *samdaz (inherited)

← Proto-Indo-European *septḿ̥ (inherited)

← Proto-Indo-European *sámh₂dʰos (inherited)

← Old Frisian siūgun (inherited)

← Old Frisian sand (inherited)

→ English seven (cognate)

→ English sand (cognate)

→ North Frisian sun (cognate)

→ North Frisian soowen (cognate)

→ North Frisian seeben (cognate)

→ Alemannic German sibe (cognate)

→ Saterland Frisian sogen (cognate)