←
Proto-Germanic *þū (inherited)←
Proto-Germanic *-ingō (inherited)←
Proto-Germanic *-ungō (mention)←
Proto-Indo-European *túh₂ (inherited)←
Norwegian Bokmål due (suffix)←
Norwegian Bokmål ing (suffix)←
Norwegian Bokmål due (link)←
Norwegian Bokmål du (mention)←
Old Norse þú (inherited)←
Old Norse -ingr (inherited)←
Old Norse -ingi (mention)←
Old Norse -ing (mention)