←
Proto-Indo-European *kʷeh₂m (inherited)
←
Proto-Indo-European *kʷeh₂ (mention)
←
Proto-Indo-European *kʷos (mention)
←
Proto-Indo-European *kʷis (mention)
→
Spanish cuan (inherited)
→
Galician can (inherited)
→
Portuguese quão (inherited)
→
Romansch ca (inherited)
→
Romansch co (inherited)
→
Romanian ca (inherited)
→
Romanian cam (inherited)
→
Old Armenian քան (cognate)