Ido du

← Esperanto du (derived)

← Spanish dos (derived)

← French deux (derived)

← Proto-Indo-European *dwóh₁ (derived)

← Italian due (derived)

→ Ido due (suffix)

→ Ido duima (suffix)

→ Ido duopligar (affix)

→ Ido dusenceso (affix)

→ Ido duimo (suffix)