Estonian -ik

← Estonian kaks (link)

← Estonian kaksik (link)

← Estonian kolm (link)

← Estonian kolmik (link)

← Estonian neli (link)

← Estonian nelik (link)

← Proto-Finnic *-ikko (inherited)

→ Estonian voolik (mention)

→ Estonian kaksik (affix)

→ Estonian ükssarvik (affix)

→ Estonian nelik (suffix)

→ Estonian kolmik (suffix)

→ Finnish -ikko (cognate)

→ Ingrian -ikko (cognate)